In-Depth 'DLC' Summary

I've decided to create a guide for the individual cores that are available as DLC's.
Perhaps it will help some of you, that is the main reason for why I am writing this.

Introduction: The Guide Info

RetroArch is a software that allows you to use various 'cores' from various authors for emulation.
Here on steam: Each core is contained within its own DLC, but the DLC's can be a bit confusing.
Especially since they don't mention what exactly they are used for, so that's why I've written this.
My goal is to write some easy to understand description to each of the currently released DLC's.
I obviously do not know everything about every single core, so most of this stuff is from the wiki.
Each of the available cores has five written examples of games that you can emulate through it.
That should give you some easy idea of what kind of games you can expect from certain cores.
I also included all the release dates of the consoles, as well as the year of their discontinuation.
Some cores require additional tweaking, like for example: The installation of BIOS files and etc.
This guide isn't a setup tutorial, there is plenty of guides that describe how to make things work.
I only wanted to give the newcomers some easier way to know: What DLC contains what things.
Whenever the developers release a new DLC, I shall be updating my guide as soon as possible.
I also added achievement compability, multiplayer options and more information for all the cores.
If you see any kind of a mistake within my guide, let me know and I will fix it right away. Thanks!

This guide received update on: March 10th 2024
Current amount of descriptions: All 64 Cores

All piracy related comments will be removed:
The emulation is legal, but pirating games isn't.
You should only play the games that you own.
There's also plenty of freeware games to get.

Core: Mupen64Plus-Next

https://store.steampowered.com/app/1227440/RetroArch__Mupen64PlusNext/
This core can emulate the following systems:
The Nintendo 64 from 1996 (Discontinued in 2002)
The Nintendo 64DD from 1999 (Discontinued in 2001)

What games can this emulator possibly run:
Example 1: The Legend of Zelda: Ocarina of Time (1998)
Example 2: Banjo-Kazooie (1998)
Example 3: Donkey Kong 64 (1999)
Example 4: Conker's Bad Fur Day (2001)
Example 5: Doshin the Giant (1999)

Some of the extra features that this core offers:
The ability to play games in high resolutions such as 1080p and also widescreen.
The ability to use the rewind feature as well as remapping hotkeys and controls.
The ability to use community-made high-res texture packs for individual games.
The ability to have rumble enabled for all the supported games and controllers.
The ability to play old games with some modern graphical tweaks is really nice.
The ability to play games exclusive to the magnetic floppy disk drive peripheral.

The compability of this core with achievements:
✅Yes: Over 200 Nintendo 64 games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Kronos

https://store.steampowered.com/app/1227441/RetroArch__Kronos/
This core can emulate the following systems:
The Sega Titan Video from 1994 (Discontinued in 2000)
The Sega Saturn from 1994 (Discontinued in 2000)

What games can this emulator possibly run:
Example 1: Virtua Fighter 2 (1994)
Example 2: Sega Rally Championship (1994)
Example 3: X-Men vs. Street Fighter (1996)
Example 4: Virtua Cop 2 (1995)
Example 5: Marvel Super Heroes (1995)

Some of the extra features that this core offers:
The ability to play your games in a higher resolution like 1080p for example.
The ability to turn on Improved Mesh, Shading and RBG Compute Shaders.

The compability of this core with achievements:
✅Yes: Over 30 Sega Saturn games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: PCSX ReARMed

https://store.steampowered.com/app/1227461/RetroArch__PCSX_ReARMed/
This core can emulate the following systems:
The PlayStation from 1994 (Discontinued in 2006)

What games can this emulator possibly run:
Example 1: Metal Gear Solid (1998)
Example 2: Silent Hill (1999)
Example 3: Crash Bandicoot 2 (1997)
Example 4: Spyro: Year of the Dragon (2000)
Example 5: Tekken 3 (1996)

Some of the extra features that this core offers:
The ability to easily emulate games even if you have a very low-spec machine.
The ability to use the rewind feature as well as remapping hotkeys and controls.
The ability to have rumble enabled for all the supported games and controllers.

The compability of this core with achievements:
✅Yes: Over 350 PlayStation games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Stella

https://store.steampowered.com/app/1227443/RetroArch__Stella/
This core can emulate the following systems:
Atari 2600 Video Computer System from 1977 (Discontinued in 1992)

What games can this emulator possibly run:
Example 1: Frogger II: ThreeeDeep! (1984)
Example 2: Road Runner (1985)
Example 3: Space Invaders (1978)
Example 4: Ghostbusters II (1989)
Example 5: Popeye (1982)

Some of the extra features that this core offers:
The ability to use the rewind feature as well as remapping hotkeys and controls.
The ability to easily emulate games even if you have a very low-spec machine.

The compability of this core with achievements:
✅Yes: Over 100 Atari 2600 games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: SameBoy

https://store.steampowered.com/app/1205580/RetroArch__SameBoy/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Pokémon Red (1996)
Example 2: Super Mario Land (1989)
Example 3: The Legend of Zelda: Link's Awakening (1993)
Example 4: Donkey Kong Country (2000)
Example 5: Pokémon Gold (1999)

Some of the extra features that this core offers:
The ability to pick which system to emulate regardless of what the game is designed for.
The ability to choose one of the user-selectable colorization palettes as a render option.
The ability to load borders for the games that support having them, there's many of 'em.
The ability to use the rewind feature as well as remapping the hotkeys and the controls.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: mGBA

https://store.steampowered.com/app/1227448/RetroArch__mGBA/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)
The Game Boy Advance from 2001 (Discontinued in 2010)

What games can this emulator possibly run:
Example 1: Pokémon Yellow (1998)
Example 2: Resident Evil Gaiden (2001)
Example 3: The Legend of Zelda: The Minish Cap (2004)
Example 4: Castlevania: Aria of Sorrow (2003)
Example 5: WarioWare, Inc.: Mega Microgames! (2003)

Some of the extra features that this core offers:
The ability to autodetect the most appropriate system emulator for the current game.
The ability to force a specific system for your game, this did require a restart, though.
The ability to show Super Game Boy borders for Super Game Boy enhanced games.
The ability to use the rewind feature as well as remapping them controls and hotkeys.
The ability to have the rumble enabled for all of the supported games and controllers.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]
✅Yes: Over 320 Game Boy Advance games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Mesen

https://store.steampowered.com/app/1205330/RetroArch__Mesen/
This core can emulate the following systems:
Nintendo Entertainment System from 1985 (Discontinued in 1995)
The Famicom Disk System from 1986 (Discontinued in 1990)

What games can this emulator possibly run:
Example 1: Contra (1987)
Example 2: Excitebike (1984)
Example 3: Mario Bros. (1983)
Example 4: River City Ransom (1989)
Example 5: Kirby's Adventure (1993)

Some of the extra features that this core offers:
The ability to use numerous video filters and the variety of customizable palettes.
The ability to use HDNes' HD packs to further improve the visuals of your games.
The ability to use rewind features as well as remapping controls and the hotkeys.
The ability to disable sprite limits and also various stretch options for aspect ratio.
The ability to play all of the games that have ever been released for this console.

The compability of this core with achievements:
✅Yes: Over 700 NES / Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Mesen S

https://store.steampowered.com/app/1222634/RetroArch__Mesen_S/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)
Super Nintendo (SNES) from 1990 (Discontinued in 2003)
Satellaview for Famicom from 1995 (Discontinued in 2000)

What games can this emulator possibly run:
Example 1: Radical Dreamers (1996)
Example 2: BS Zelda no Densetsu (1995)
Example 3: Pokémon Crystal (2000)
Example 4: Kirby Super Star (1996)
Example 5: Super Mario World (1990)

Some of the extra features that this core offers:
The ability to simulate the Super Game Boy peripheral is fully supported in this core.
The ability to use the rewind feature as well as remapping your controls and hotkeys.
The ability to pick what Game Boy system you want to use for the supported games.
The ability to play all the 'SNES, GB, and GBC' games that have ever been released.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]
✅Yes: Over 650 SNES / Super Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Genesis Plus GX

https://store.steampowered.com/app/1227449/RetroArch__Genesis_Plus_GX/
This core can emulate the following systems:
The SG-1000 from 1983 (Discontinued in 1985)
The Sega Pico from 1993 (Discontinued in 2005)
The Game Gear from 1990 (Discontinued in 1997)
The Master System from 1985 (Discontinued in 1996)
The Sega Mega-CD from 1991 (Discontinued in 1996)
The Mega Drive Genesis from 1988 (Discontinued in 1999)

What games can this emulator possibly run:
Example 1: Castlevania: Bloodlines (1994)
Example 2: Snatcher (1988)
Example 3: The Adventures of Batman & Robin (1994)
Example 4: Out Run (1986)
Example 5: Streets of Rage (1991)

Some of the extra features that this core offers:
The ability to use the rewind feature as well as remapping the controls and hotkeys.
The ability to play pretty much every single game ever released for these consoles.
The ability to easily emulate six different systems in this one 'easy to use' package.

The compability of this core with achievements:
✅Yes: Over 10 SG-1000 games with achievements, check here[retroachievements.org]
✅Yes: Over 50 Game Gear games with achievements, check here[retroachievements.org]
✅Yes: Over 70 Master System games with achievements, check here[retroachievements.org]
✅Yes: Over 20 Sega Mega-CD games with achievements, check here[retroachievements.org]
✅Yes: Over 350 Mega Drive/Genesis games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Final Burn Neo

https://store.steampowered.com/app/1222632/RetroArch__Final_Burn_Neo/
This core can emulate the following systems:
Various Arcades from Capcom, Konami and etc. (1970s - 80s - 90s)
The Neo Geo Multi Video System from 1990 (Discontinued in 2007)
Also supports various other systems such as PC Engine (80s - 90s)

What games can this emulator possibly run:
Example 1: Metal Slug 3 (2000)
Example 2: Samurai Shodown V (2003)
Example 3: The King of Fighters '98 (1998)
Example 4: Fatal Fury Special (1993)
Example 5: NAM-1975 (1990)

Some of the extra features that this core offers:
The ability to use the rewind features as well as remapping the controls and hotkeys.
The ability to boot up a wide variety of games, however, It is a bit confusing to set up.

The compability of this core with achievements:
✅Yes: Over 350 Mega Drive/Genesis games with achievements, check here[retroachievements.org]
✅Yes: Over 700 NES / Famicom games with achievements, check here[retroachievements.org]
✅Yes: Over 10 Neo Geo Pocket games with achievements, check here[retroachievements.org]
✅Yes: Over 70 Master System games with achievements, check here[retroachievements.org]
✅Yes: Over 150 Arcade based games with achievements, check here[retroachievements.org]
✅Yes: Over 5 ColecoVision games with achievements, check here[retroachievements.org]
✅Yes: Over 50 Game Gear games with achievements, check here[retroachievements.org]
✅Yes: Over 70 PC Engine games with achievements, check here[retroachievements.org]
✅Yes: Over 15 MSX 'PC' games with achievements, check here[retroachievements.org]
✅Yes: Over 10 SG-1000 games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Picodrive

https://store.steampowered.com/app/1227460/RetroArch__Picodrive/
This core can emulate the following systems:
The Sega Pico from 1993 (Discontinued in 2005)
The Game Gear from 1990 (Discontinued in 1997)
The Master System from 1985 (Discontinued in 1996)
The Sega Mega-CD from 1991 (Discontinued in 1996)
The Mega Drive Genesis from 1988 (Discontinued in 1999)
Mega Drive 32X Genesis 32X from 1994 (Discontinued in 1996)

What games can this emulator possibly run:
Example 1: The Amazing Spider-Man: Web of Fire (1996)
Example 2: Primal Rage (1994)
Example 3: Contra: Hard Corps (1994)
Example 4: Golden Axe (1989)
Example 5: Snatcher (1988)

Some of the extra features that this core offers:
The ability to use the rewind feature as well as remapping the controls and hotkeys.
The ability to run your games smoothly even on some obviously low-spec machines.
The ability to run games within the Sega Genesis '32X' add-on is a very nice feature.

The compability of this core with achievements:
✅Yes: Over 50 Game Gear games with achievements, check here[retroachievements.org]
✅Yes: Over 70 Master System games with achievements, check here[retroachievements.org]
✅Yes: Over 20 Sega Mega-CD games with achievements, check here[retroachievements.org]
✅Yes: Over 350 Mega Drive/Genesis games with achievements, check here[retroachievements.org]
✅Yes: Over 5 Mega Drive / Genesis 32x games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: NeoCD

https://store.steampowered.com/app/1227456/RetroArch__NeoCD/
This core can emulate the following systems:
The Neo Geo CD from 1994 (Discontinued in 1997)

What games can this emulator possibly run:
Example 1: Shinsetsu Samurai Spirits Bushidō Retsuden (1997)
Example 2: Samurai Shodown IV: Amakusa's Revenge (1996)
Example 3: Ninja Master's: Haō Ninpō Chō (1996)
Example 4: Neo Drift Out: New Technology (1996)
Example 5: The King of Fighters '94 (1994)

Some of the extra features that this core offers:
The ability to use the rewind feature.
The ability to customize the controls.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: bsnes

https://store.steampowered.com/app/1222631/RetroArch__bsnes/
This core can emulate the following systems:
Super Nintendo (SNES) from 1990 (Discontinued in 2003)
The Super Game Boy from 1994 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Animaniacs (1994)
Example 2: Mole Mania (1996)
Example 3: Yoshi's Island (1995)
Example 4: Star Fox (1993)
Example 5: Killer Instinct (1994)

Some of the extra features that this core offers:
The ability to play pretty much every single game ever released for the 'SNES' system.
The ability to utilize the Super Game Boy peripheral for the Game Boy library of games.
The ability to use the 'bsnes HD beta' for widescreen as well as ultrawide + HD support.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Flycast

https://store.steampowered.com/app/1222633/RetroArch___Flycast/
This core can emulate the following systems:
Sega Dreamcast from 1998 (Discontinued in 2001)
The Atomiswave from 2002 (Discontinued in 2009)

What games can this emulator possibly run:
Example 1: D2 (1999)
Example 2: Seaman (1999)
Example 3: Guilty Gear X Ver. 1.5 (2003)
Example 4: Resident Evil Code: Veronica (2000)
Example 5: The King of Fighters Neowave (2004)

Some of the extra features that this core offers:
The ability to have rumble enabled for all the supported games and controllers.
The ability to use the rewind feature as well as remapping hotkeys and controls.
The ability to play the games in a higher resolution, such as 1080p for example.
The ability to play in widescreen, you'll need widescreen game hacks for it, tho.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Nestopia

https://store.steampowered.com/app/1222635/RetroArch__Nestopia/
This core can emulate the following systems:
Nintendo Entertainment System from 1985 (Discontinued in 1995)

What games can this emulator possibly run:
Example 1: The Legend of Zelda (1986)
Example 2: Super Mario Bros. (1985)
Example 3: Kirby's Adventure (1993)
Example 4: Super Contra (1987)
Example 5: Donkey Kong Classics (1988)

Some of the extra features that this core offers:
The ability to use the rewind features as well as remapping your controls and hotkeys.
The ability to use custom color palettes as well as various filters such as monochrome.

The compability of this core with achievements:
✅Yes: Over 700 NES / Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Snes9x

https://store.steampowered.com/app/1227444/RetroArch__Snes9x/
This core can emulate the following systems:
Super Nintendo (SNES) from 1990 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Super Metroid (1994)
Example 2: Yoshi's Island (1995)
Example 3: Super Mario Kart (1992)
Example 4: Donkey Kong Country (1994)
Example 5: Super Bomberman (1993)

Some of the extra features that this core offers:
The ability to also boot up games through BS-X and Sufami Turbo if you have the bios.
The ability to increase the sprite limits, use the rewind features and remap the controls.

The compability of this core with achievements:
✅Yes: Over 650 SNES / Super Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: BlastEm

https://store.steampowered.com/app/1227452/RetroArch__BlastEm/
This core can emulate the following systems:
The Mega Drive Genesis from 1988 (Discontinued in 1999)

What games can this emulator possibly run:
Example 1: Castle of Illusion Starring Mickey Mouse (1990)
Example 2: The Revenge of Shinobi (1989)
Example 3: Sonic the Hedgehog (1991)
Example 4: Mega Man: The Wily Wars (1994)
Example 5: Super Street Fighter II (1993)

Some of the extra features that this core offers:
The ability to play every single game that was released for the Genesis / Mega Drive.
The ability to use the rewind features as well as remapping the controls and hotkeys.

The compability of this core with achievements:
✅Yes: Over 350 Mega Drive / Genesis games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: DesmuME

https://store.steampowered.com/app/1227467/RetroArch__DesmuME/
This core can emulate the following systems:
The Nintendo DS from 2004 (Discontinued in 2013)

What games can this emulator possibly run:
Example 1: Animal Crossing: Wild World (2005)
Example 2: New Super Mario Bros. (2006)
Example 3: Castlevania: Dawn Of Sorrow (2005)
Example 4: Pokémon Sacred Gold 1.05 Hack (2012)
Example 5: Legend Of Zelda: The Phantom Hourglass (2007)

Some of the extra features that this core offers:
The ability to run dual-screen games, you have to choose the preferred screen layout.
The ability to use the rewind features, also remapping of the hotkeys and the controls.
The ability to use various hybrid screen layouts to properly show both screens at once.

The compability of this core with achievements:
✅Yes: Over 150 Nintendo DS games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: PPSSPP

https://store.steampowered.com/app/1234350/RetroArch__PPSSPP/
This core can emulate the following systems:
The PlayStation Portable from 2004 (Discontinued in 2014)

What games can this emulator possibly run:
Example 1: Grand Theft Auto: Chinatown Wars (2009)
Example 2: Grand Theft Auto: Liberty City Stories (2005)
Example 3: Metal Gear Solid: Peace Walker (2010)
Example 4: God of War: Ghost of Sparta (2010)
Example 5: LittleBigPlanet (2008)

Some of the extra features that this core offers:
The ability to remap your controls and the hotkeys.
The ability to also boot up DLC's with your games.

The compability of this core with achievements:
✅Yes: Over 60 PlayStation Portable games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: VICE

https://store.steampowered.com/app/1828340/RetroArch__VICE/
This core can emulate the following systems:
Commodore 64 from 1982 (Discontinued in 1994)
Commodore 128 from 1985 (Discontinued in 1989)
Commodore PET from 1977 (Discontinued in 1982)
Commodore VIC-20 from 1980 (Discontinued in 1985)
Commodore CBM-II from 1982 (Discontinued in 1984)
Commodore Plus/4 from 1984 (Discontinued in 1985)
C64 Direct-to-TV from 2004 (Discontinued in 2005)
CMD SuperCPU from 1997 (Discontinued in 2001)

What games can this emulator possibly run:
Example 1: The Hitchhiker's Guide to the Galaxy (1984)
Example 2: Cybernoid II: The Revenge (1988)
Example 3: The Last Ninja (1987)
Example 4: The Battle of Midway (1987)
Example 5: Commando (1985)

Some of the extra features that this core offers:
The ability to use the rewind feature as well as remapping hotkeys and controls.
The ability to crop borders to fit various host screens as well as the zoom ability.
The ability to select various color palette options and other video render options.
The ability to play a big variety of old 8-bit computer games within a single core.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: UAE

https://store.steampowered.com/app/1829870/RetroArch__UAE/
This core can emulate the following systems:
Commodore Amiga 500 from 1987 (Discontinued in 1992)
Commodore Amiga 600 from 1992 (Discontinued in 1993)
Commodore Amiga 1000 from 1985 (Discontinued in 1987)
Commodore Amiga 1200 from 1992 (Discontinued in 1996)
Commodore Amiga 2000 from 1987 (Discontinued in 1991)
Commodore Amiga 4000 from 1992 (Discontinued in 1994)
Commodore Amiga CDTV from 1991 (Discontinued in 1992)
Commodore Amiga CD32 from 1993 (Discontinued in 1994)

What games can this emulator possibly run:
Example 1: Speedball 2: Brutal Deluxe (1990)
Example 2: Lemmings (1991)
Example 3: Pinball Fantasies (1992)
Example 4: Rick Dangerous (1989)
Example 5: Marble Madness (1984)

Some of the extra features that this core offers:
The ability to use the rewind features, also remapping of the hotkeys and the controls.
The ability to play in various screen modes for better display quality and better speed.
The ability to utilize the virtual keyboard for those who want to play with the controller.
The ability to play a big variety of old 16bit/32bit computer games within a single core.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: RACE

https://store.steampowered.com/app/1227453/RetroArch__RACE/
This core can emulate the following systems:
The Neo Geo Pocket from 1998 (Discontinued in 1999)
Neo Geo Pocket Color from 1999 (Discontinued in 2001)

What games can this emulator possibly run:
Example 1: SNK Gals' Fighters (2000)
Example 2: Dark Arms: Beast Buster (1999)
Example 3: Evolution: Eternal Dungeons (2000)
Example 4: Sonic the Hedgehog Pocket Adventure (1999)
Example 5: SNK vs. Capcom: Card Fighter's Clash (1999)

Some of the extra features that this core offers:
The ability to fully remap your controls.
The ability to utilize the rewind feature.

The compability of this core with achievements:
✅Yes: Over 10 Neo Geo Pocket games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Caprice32

https://store.steampowered.com/app/1227454/RetroArch__Caprice32/
This core can emulate the following systems:
Amstrad CPC464 from 1984 (Discontinued in 1990)
Amstrad CPC464+ from 1990 (Discontinued in 1993)
Amstrad CPC664 from 1985 (Discontinued in 1986)
Amstrad GX4000 from 1990 (Discontinued in 1993)
Amstrad CPC6128 from 1985 (Discontinued in 1990)
Amstrad CPC6128+ from 1990 (Discontinued in 1993)

What games can this emulator possibly run:
Example 1: Arkanoid (1986)
Example 2: Ranarama (1987)
Example 3: Chase H.Q. (1988)
Example 4: Astro Marine Corps (1989)
Example 5: Cisco Heat (1990)

Some of the extra features that this core offers:
The ability to play games from all of the Amstrad based systems within a single core.
The ability to utilize control remapping, rewind feature, hotkeys, and virtual keyboard.
The ability to choose screen type color intensity, you can even pick a preferred color.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: gpSP

https://store.steampowered.com/app/1227468/RetroArch__gpSP/
This core can emulate the following systems:
The Game Boy Advance from 2001 (Discontinued in 2010)

What games can this emulator possibly run:
Example 1: Pokémon Emerald (2004)
Example 2: Sonic Advance (2001)
Example 3: Metroid Fusion (2002)
Example 4: Legend of Zelda The Minish Cap (2004)
Example 5: Fire Emblem: The Blazing Blade (2003)

Some of the extra features that this core offers:
The ability to use the amazing rewind feature.
The ability to remap the controls and hotkeys.

The compability of this core with achievements:
✅Yes: Over 320 Game Boy Advance games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: ProSystem

https://store.steampowered.com/app/1227481/RetroArch__ProSystem/
This core can emulate the following systems:
The Atari 7800 from 1986 (Discontinued in 1992)

What games can this emulator possibly run:
Example 1: Alien Brigade (1990)
Example 2: Xenophobe (1987)
Example 3: Commando (1985)
Example 4: Midnight Mutants (1990)
Example 5: Double Dragon (1987)

Some of the extra features that this core offers:
The ability to use the amazing rewind feature.
The ability to remap the controls and hotkeys.

The compability of this core with achievements:
✅Yes: Over 10 Atari 7800 games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Beetle PSX

https://store.steampowered.com/app/1222630/RetroArch__Beetle_PSX/
This core can emulate the following systems:
The PlayStation from 1994 (Discontinued in 2006)

What games can this emulator possibly run:
Example 1: Spyro: Year of the Dragon (2000)
Example 2: Metal Gear Solid (1998)
Example 3: Crash Bash (2000)
Example 4: Pepsiman (1999)
Example 5: Tekken 3 (1996)

Some of the extra features that this core offers:
The ability to render games with upscaled internal resolution.
The ability to utilize some high resolution texture replacement.
The ability to use rumble for supported games and controllers.
The ability to use the rewind feature and to remap the controls.
The ability to make use of the Widescreen Mode Hack options.
The ability to have increased performance with the recompilers.

The compability of this core with achievements:
✅Yes: Over 350 PlayStation games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: EasyRPG

https://store.steampowered.com/app/1222638/RetroArch__EasyRPG/
This core can emulate the following systems:
RPG Maker 2000 from 2000 (Discontinued in ????)
RPG Maker 2003 from 2002 (Discontinued in ????)

What games can this emulator possibly run:
Example 1: Dungeoneer: A Beautiful Escape (2010)
Example 2: Clock of Atonement (2007)
Example 3: Die Bücher Luzifers 2 (2003)
Example 4: Dragonball Z: Legend of Z (2020)
Example 5: Eling: First Dimension (2014)

Some of the extra features that this core offers:
From what I can see, It just allows you to emulate some older RPG Maker games.
The EasyRPG itself seems to be an open source, role playing game creation tool.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Beetle PCE

https://store.steampowered.com/app/1843610/RetroArch__Beetle_PCE/
This core can emulate the following systems:
PC Engine - TurboGrafx CD from 1987 (Discontinued in 1994)
PC Engine - TurboGrafx 16 from 1988 (Discontinued in 1994)
PC Engine - SuperGrafx from 1989 (Discontinued in 1994)

What games can this emulator possibly run:
Example 1: Spirit Soldier Spriggan (1991)
Example 2: Ghouls 'n Ghosts (1988)
Example 3: Bonk's Adventure (1989)
Example 4: Tengai Makyō II (1992)
Example 5: Snatcher (1992)

Some of the extra features that this core offers:
The ability to remap your controls and your hotkeys.
The ability to use the rewind and the netplay feature.

The compability of this core with achievements:
✅Yes: Over 70 PC Engine games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Beetle Cygne

https://store.steampowered.com/app/1843660/RetroArch__Beetle_Cygne/
This core can emulate the following systems:
WonderSwan from 1999 (Discontinued in 2003)
WonderSwan Color from 2000 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Hataraku Chocobo (2000)
Example 2: Klonoa: Moonlight Museum (1999)
Example 3: Judgement Silversword: Rebirth Edition (2001)
Example 4: One Piece: Grand Battle Swan Colosseum (2002)
Example 5: Digimon Adventure: Anode/Cathode Tamer (1999)

Some of the extra features that this core offers:
The ability to remap your controls and your hotkeys.
The ability to use the rewind and the netplay feature.

The compability of this core with achievements:
✅Yes: Over 10 WonderSwan games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Beetle VB

https://store.steampowered.com/app/1844870/RetroArch__Beetle_VB/
This core can emulate the following systems:
The Virtual Boy from 1995 (Discontinued in 1996)

What games can this emulator possibly run:
Example 1: Mario's Tennis (1995)
Example 2: Vertical Force (1995)
Example 3: Space Squash (1995)
Example 4: Teleroboxer (1995)
Example 5: Jack Bros. (1995)

Some of the extra features that this core offers:
The ability to switch the anaglyph preset to a different one.
The ability to remap your controls as well as your hotkeys.
The ability to use the rewind and the fast forward features.
The ability to switch the color palette to a different setting.

The compability of this core with achievements:
✅Yes: Over 10 Virtual Boy games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Potator

https://store.steampowered.com/app/1844930/RetroArch__Potator/
This core can emulate the following systems:
Watara Supervision from 1992 (Discontinued in 1993)

What games can this emulator possibly run:
Example 1: Cave Wonders (1992)
Example 2: Classic Casino (1993)
Example 3: Delta Hero (1992)
Example 4: Grand Prix (1992)
Example 5: Hero Hawk (1992)

Some of the extra features that this core offers:
The ability to change the internal color palette to a different one.
The ability to use the rewind and also the fast forward features.
The ability to remap your controls and to change your hotkeys.

The compability of this core with achievements:
✅Yes: Over 60 Supervision games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: FCEUmm

https://store.steampowered.com/app/1985100/RetroArch__FCEUmm/
This core can emulate the following systems:
Nintendo Entertainment System from 1985 (Discontinued in 1995)
The Famicom Disk System from 1983 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Contra (1987)
Example 2: Excitebike (1984)
Example 3: Mario Bros. (1983)
Example 4: River City Ransom (1989)
Example 5: The Legend of Zelda (1986)

Some of the extra features that this core offers:
The ability to set up and customize the 'Color Palette' core option.
The ability to also utilize one of the additional NTSC Filter options.
The ability to remap all your controls and to change your hotkeys.
The ability to enjoy bootleg games thanks to the special mappers.
Therefore: You can also play some popular unlicensed NES roms.

The compability of this core with achievements:
✅Yes: Over 750 NES / Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: QuickNES

https://store.steampowered.com/app/1227459/RetroArch__QuickNES/
This core can emulate the following systems:
Nintendo Entertainment System from 1985 (Discontinued in 1995)

What games can this emulator possibly run:
Example 1: Donkey Kong Classics (1988)
Example 2: The Legend of Zelda (1986)
Example 3: Super Mario Bros. (1985)
Example 4: Kirby's Adventure (1993)
Example 5: Super Contra (1987)

Some of the extra features that this core offers:
The ability to set up and customize the 'Color Palette' core option.
The ability to run smoothly even if your computer has weak specs.
The ability to change your hotkeys and to also customize controls.

The compability of this core with achievements:
✅Yes: Over 750 NES / Famicom games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: SMS Plus GX

https://store.steampowered.com/app/1232622/RetroArch__SMS_Plus_GX/
This core can emulate the following systems:
The Game Gear from 1990 (Discontinued in 1997)
The ColecoVision from 1982 (Discontinued in 1985)
The Master System from 1985 (Discontinued in 1996)

What games can this emulator possibly run:
Example 1: Deep Duck Trouble Starring Donald Duck (1993)
Example 2: Sonic the Hedgehog: Triple Trouble (1994)
Example 3: Smurf: Rescue in Gargamel's Castle (1982)
Example 4: Alex Kidd in Miracle World (1986)
Example 5: Michael Jackson's Moonwalker (1990)

Some of the extra features that this core offers:
The ability to remove border, change region and other similar tweaks.
The ability to enable the NTSC Filter to mimic the feel of the old TV's.
The ability to once again: Customize your controls and your hotkeys.

The compability of this core with achievements:
✅Yes: Over 60 Game Gear games with achievements, check here[retroachievements.org]
✅Yes: Over 10 ColecoVision games with achievements, check here[retroachievements.org]
✅Yes: Over 80 Master System games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: VBA-M

https://store.steampowered.com/app/1227455/RetroArch__VBAM/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)
The Game Boy Advance from 2001 (Discontinued in 2010)

What games can this emulator possibly run:
Example 1: Pokémon Yellow (1998)
Example 2: Resident Evil Gaiden (2001)
Example 3: Castlevania: Aria of Sorrow (2003)
Example 4: WarioWare, Inc.: Mega Microgames! (2003)
Example 5: The Legend of Zelda: The Minish Cap (2004)

Some of the extra features that this core offers:
The ability to manually adjust ingame's solar sensor meter for certain games.
The ability to choose color palette to customize how the games look and feel.
The ability to change the controls, change the hotkeys, enable turbo buttons.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]
✅Yes: Over 320 Game Boy Advance games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: GW

https://store.steampowered.com/app/1227450/RetroArch__GW/
This core can emulate the following systems:
Game & Watch from 1980 (Discontinued in 1991)

What games can this emulator possibly run:
Example 1: Snoopy Tennis (1982)
Example 2: Turtle Bridge (1982)
Example 3: Towering Rescue (1981)
Example 4: Tom & Jerry Popper (1983)
Example 5: Aerogun Field (1987)

Some of the extra features that this core offers:
The ability to remap your controls and to change your hotkeys.
The ability to run a variety of simulators from madrigaldesign.it.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: TGB Dual

https://store.steampowered.com/app/2010120/RetroArch__TGB_Dual?snr=2_9_100000_

This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: The Legend of Zelda: Link's Awakening (1993)
Example 2: Donkey Kong Country (1994)
Example 3: Super Mario Land (1989)
Example 4: Pokémon Gold (1999)
Example 5: Pokémon Red (1996)

Some of the extra features that this core offers:
The ability to just boot up two games at once and have them interconnected.
The ability to for example trade pokemon's between two separate instances.
The ability to switch player screens, remap controls and use the multiplayer.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: vecx

https://store.steampowered.com/app/2008300/RetroArch__vecx/
This core can emulate the following systems:
Vectrex from 1982 (Discontinued in 1984)

What games can this emulator possibly run:
Example 1: Cosmic Chasm (1982)
Example 2: Fortress of Narzod (1982)
Example 3: 3D Crazy Coaster (1983)
Example 4: Mine Storm (1982)
Example 5: Polar Rescue (1983)

Some of the extra features that this core offers:
The ability to change the Res Multiplier to a higher value.
The ability to use the rewind feature, also achievements.

The compability of this core with achievements:
✅Yes: Over 10 Vectrex games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Beetle Saturn

https://store.steampowered.com/app/1905200/RetroArch__Beetle_Saturn/
This core can emulate the following systems:
The Sega Saturn from 1994 (Discontinued in 2000)

What games can this emulator possibly run:
Example 1: Virtua Fighter 2 (1994)
Example 2: Virtua Cop 2 (1995)
Example 3: Mega Man 8 (1996)
Example 4: Shining Force III (1997)
Example 5: Burning Rangers (1998)

Some of the extra features that this core offers:
The ability to play your games in a group, multiplayer is supported here.
The ability to change your controls, hotkeys & setup multiple controllers.
The ability to setup multiple mouse controllers, turn them into Lightguns.
The ability to use the 6 player adapter on both ports, which is awesome.

The compability of this core with achievements:
✅Yes: Over 45 Sega Saturn games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Fuse

https://store.steampowered.com/app/2004140/RetroArch__Fuse/
This core can emulate the following systems:
Sinclair ZX Spectrum from 1982 (Discontinued in 1992)
Sinclair ZX Spectrum +2 from 1986 (Discontinued in 1992)
Sinclair ZX Spectrum +3 from 1987 (Discontinued in 1992)
Sinclair ZX Spectrum SE from 1987 (Discontinued in 1992)
Sinclair ZX Spectrum +2A from 1987 (Discontinued in 1992)
Sinclair ZX Spectrum +3E from 1987 (Discontinued in 1992)
Sinclair ZX Spectrum 16K from 1982 (Discontinued in 1992)
Sinclair ZX Spectrum 48K from 1982 (Discontinued in 1992)
Scorpion 256K Computer from 1994 (Discontinued in 1996)
Pentagon 128K Computer from 1991 (Discontinued in 1996)
Pentagon 512K Computer from 1991 (Discontinued in 1996)
Pentagon 1024 Computer from 1991 (Discontinued in 1996)
Sinclair ZX Spectrum 128K from 1986 (Discontinued in 1992)
Sinclair Timex Computer TC2048 from 1984 (Discontinued in 1989)
Sinclair Timex Computer TC2068 from 1983 (Discontinued in 1989)
Sinclair Timex Computer TS2068 from 1983 (Discontinued in 1989)
Sinclair ZX Spectrum 48K (NTSC) from 1984 (Discontinued in 1992)

What games can this emulator possibly run:
Example 1: Rainbow Islands: The Story of Bubble Bobble 2 (1987)
Example 2: Daley Thompson's Decathlon (1984)
Example 3: Batman: The Caped Crusader (1988)
Example 4: The Way of the Exploding Fist (1985)
Example 5: La Abadía del Crimen (1987)

Some of the extra features that this core offers:
The ability to setup and customize all your controls however you like.
The ability to have two users playing at the same time: Is multiplayer.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: FreeChaF

https://store.steampowered.com/app/1227458/RetroArch__FreeChaF/
This core can emulate the following systems:
Fairchild ChannelF from 1976 (Discontinued in 1983)

What games can this emulator possibly run:
Example 1: Slot Machine (1980)
Example 2: Spitfire (1977)
Example 3: Dodge-It (1978)
Example 4: Bowling (1978)
Example 5: Space War (1977)

Some of the extra features that this core offers:
The ability to change your hotkeys and also your controls.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Gambatte

https://store.steampowered.com/app/2004070/RetroArch__Gambatte/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Pokémon Red (1996)
Example 2: Pokémon Gold (1999)
Example 3: Super Mario Land (1989)
Example 4: Donkey Kong Country (1994)
Example 5: The Legend of Zelda: Link's Awakening (1993)

Some of the extra features that this core offers:
The ability to use custom palletes, gb colorization and etc.
The ability to change hotkeys and controls is also present.
The ability to simply use one of the many Internal palettes.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: FreeIntv

https://store.steampowered.com/app/1227457/RetroArch__FreeIntv/
This core can emulate the following systems:
Mattel Intellivision from 1979 (Discontinued in 1990)

What games can this emulator possibly run:
Example 1: Astrosmash (1981)
Example 2: BurgerTime (1982)
Example 3: Night Stalker (1982)
Example 4: Tron: Deadly Discs (1982)
Example 5: Advanced Dungeons & Dragons: Treasure of Tarmin (1983)

Some of the extra features that this core offers:
The ability to use Controller overlays, just like it was on the original system.
The ability to customize your controls, hotkeys, or how overlay is displayed.

The compability of this core with achievements:
✅Yes: Over 10 Intellivision games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: CrocoDS

https://store.steampowered.com/app/1227482/RetroArch__CrocoDS/
This core can emulate the following systems:
Amstrad CPC 6128 from 1985 (Discontinued in 1990)

What games can this emulator possibly run:
Example 1: Batman (1989)
Example 2: Cauldron (1985)
Example 3: Commando (1985)
Example 4: Bomb Jack (1984)
Example 5: Ikari Warriors (1986)

Some of the extra features that this core offers:
The ability to customize your controls.
The ability to customize your hotkeys.
The ability to use rewind, speed hack.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Gearboy

https://store.steampowered.com/app/1227485/RetroArch__Gearboy/
This core can emulate the following systems:
Classic Game Boy from 1989 (Discontinued in 2003)
The Game Boy Color from 1998 (Discontinued in 2003)

What games can this emulator possibly run:
Example 1: Pokémon Red (1996)
Example 2: Pokémon Gold (1999)
Example 3: Super Mario Land (1989)
Example 4: Donkey Kong Country (1994)
Example 5: The Legend of Zelda: Link's Awakening (1993)

Some of the extra features that this core offers:
The ability to change your hotkeys, color palette and also controls.
The ability to boot games in Game Boy Advance hardware preset.

The compability of this core with achievements:
✅Yes: Over 160 Game Boy Color games with achievements, check here[retroachievements.org]
✅Yes: Over 240 Classic Game Boy games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Gearsystem

https://store.steampowered.com/app/1227484/RetroArch__Gearsystem/
This core can emulate the following systems:
The SG-1000 from 1983 (Discontinued in 1985)
The Game Gear from 1990 (Discontinued in 1997)
The Master System from 1985 (Discontinued in 1996)

What games can this emulator possibly run:
Example 1: Buck Rogers: Planet of Zoom (1982)
Example 2: Championship Lode Runner (1983)
Example 3: Sonic the Hedgehog Spinball (1993)
Example 4: Alex Kidd: The Lost Stars (1986)
Example 5: Rambo: First Blood Part II (1986)

Some of the extra features that this core offers:
The ability to play '3D Glasses' supported games, just enable it in the settings.
The ability to change your controls, change your hotkeys, or even your region.

The compability of this core with achievements:
✅Yes: Over 10 SG-1000 games with achievements, check here[retroachievements.org]
✅Yes: Over 60 Game Gear games with achievements, check here[retroachievements.org]
✅Yes: Over 80 Master System games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: TIC-80

https://store.steampowered.com/app/1222637/RetroArch__TIC80/
This core can emulate the following systems:
TIC-80 from 2017 (Discontinued in ????)

What games can this emulator possibly run:
Example 1: CAULIFLOWER POWER (2018)
Example 4: WHITESTONE: SURVIVAL (2019)
Example 2: SUPER MEAT BOY DEMAKE (2020)
Example 3: BEYOND THE UNDERGROUND (2021)
Example 5: BLENTIC 3D MODEL EDITOR (2022)

Some of the extra features that this core offers:
The ability to create games and tools for free with this open source fantasy computer.
The ability to download creations of other people at the Official TIC-80.COM website.[tic80.com]
The ability to find some additional games at itch.io, or some other such websites too.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: Handy

https://store.steampowered.com/app/2062460/RetroArch__Handy/
This core can emulate the following systems:
Atari Lynx from 1989 (Discontinued in 1995)

What games can this emulator possibly run:
Example 1: Electrocop (1989)
Example 2: Kung Food (1992)
Example 3: Rampart (1990)
Example 4: Pinball Jam (1992)
Example 5: Gordo 106 (1993)

Some of the extra features that this core offers:
The ability to remap your controls and hotkeys.
The ability to use the rewind feature of retroarch.

The compability of this core with achievements:
✅Yes: Over 10 Atari Lynx games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: BlueMSX

https://store.steampowered.com/app/2010121/RetroArch__BlueMSX/
This core can emulate the following systems:
ColecoVision from 1982 (Discontinued in 1985)
The SG-1000 from 1983 (Discontinued in 1985)
Microsoft - MSX from 1983 (Discontinued in 1993)
Microsoft - MSX 2 from 1985 (Discontinued in 1993)

What games can this emulator possibly run:
Example 1: Metal Gear (1987)
Example 2: Snatcher (1988)
Example 3: Monaco GP (1979)
Example 4: Congo Bongo (1983)
Example 5: Donkey Kong Jr. (1982)

Some of the extra features that this core offers:
The ability to customize your controls.
The ability to customize your hotkeys.
The ability to emulate older computer.

The compability of this core with achievements:
✅Yes: Over 10 SG-1000 games with achievements, check here[retroachievements.org]
✅Yes: Over 10 ColecoVision games with achievements, check here[retroachievements.org]
✅Yes: Over 10 Microsoft - MSX games with achievements, check here[retroachievements.org]

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: WASM-4

https://store.steampowered.com/app/1876450/RetroArch__WASM4/
This core can emulate the following systems:
WASM-4 from 2017 (Discontinued in ????)

What games can this emulator possibly run:
Example 1: Floppy Fish (2022)
Example 4: Assemblio (2022)
Example 2: Maze (2021)
Example 3: Snake (2021)
Example 5: Watris (2021)

Some of the extra features that this core offers:
The ability to create games and tools for free based in the WebAssembly format.
The ability to download creations of other people at the Official WASM-4 website.[wasm4.org]
The ability to find some additional games at itch.io, or some other such websites.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: A800

https://store.steampowered.com/app/1238580/RetroArch__A800/
This core can emulate the following systems:
Atari 400 System from 1979 (Discontinued in 1984)
Atari 800 System from 1979 (Discontinued in 1984)
Atari 600XL System from 1983 (Discontinued in 1992)
Atari 800XL System from 1983 (Discontinued in 1992)
Atari 130XE System from 1985 (Discontinued in 1992)
Atari 5200 SuperSystem from 1982 (Discontinued in 1984)

What games can this emulator possibly run:
Example 1: James Bond 007 (1983)
Example 2: Rescue on Fractalus! (1984)
Example 3: The Activision Decathlon (1983)
Example 4: Bounty Bob Strikes Back! (1984)
Example 5: The Dreadnaught Factor (1983)

Some of the extra features that this core offers:
The ability to emulate all of the classic atari 8-bit computer systems in one package.
The ability to easily switch to whichever system you want emulated, a lot of configs.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: PocketCDG

https://store.steampowered.com/app/1232621/RetroArch__PocketCDG/
This core can emulate the following systems:
The MP3 karaoke music player from 2017 (Discontinued in ????)

What games can this emulator possibly run:
Example 1: Vocal-Star Karaoke Party Hits Vol. 1 (2019)
Example 4: Vocal-Star Karaoke Party Hits Vol. 2 (2019)
Example 2: Vocal-Star Karaoke Party Hits Vol. 3 (2019)
Example 3: Vocal-Star Karaoke Party Hits Vol. 4 (2019)
Example 5: Vocal-Star Karaoke Party Hits Vol. 5 (2019)

Some of the extra features that this core offers:
The ability to sing karaoke to whatever song you want.
All you need to do so is creating a folder with .cdg file.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: A5200

https://store.steampowered.com/app/2066880/RetroArch__A5200/
This core can emulate the following systems:
Atari 5200 SuperSystem from 1982 (Discontinued in 1984)

What games can this emulator possibly run:
Example 1: Ms. Pac-Man (1981)
Example 2: River Raid (1982)
Example 3: Berzerk (1980)
Example 4: Joust (1982)
Example 5: Q*bert (1982)

Some of the extra features that this core offers:
The ability to run games easily on even the weakest hardware.
The ability to remap controls, hotkeys and other such settings.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: ep128emu

https://store.steampowered.com/app/2234340/RetroArch__ep128emu/
This core can emulate the following systems:
Enterprise 64 from 1985 (Discontinued in 1986)
Enterprise 128 from 1985 (Discontinued in 1986)
Amstrad CPC464 from 1984 (Discontinued in 1990)
Amstrad CPC664 from 1985 (Discontinued in 1986)
Amstrad CPC6128 from 1985 (Discontinued in 1990)
Videoton TV-Computer from 1986 (Discontinued in 1986)
Sinclair ZX Spectrum 48K from 1982 (Discontinued in 1992)
Sinclair ZX Spectrum 128K from 1986 (Discontinued in 1992)

What games can this emulator possibly run:
Example 1: Boulder Dash 1 CPC (1985)
Example 2: Cross Road Reloaded (1988)
Example 3: International Karate+ (1987)
Example 4: Wriggler - Extended (1985)
Example 5: Way of the Tiger, The (1986)

Some of the extra features that this core offers:
The ability to choose from a large variety of keyboard layouts, a lot of customization.
The ability to boot a large number of supported files, content type gets autodetected.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: MojoZork

https://store.steampowered.com/app/2246910/RetroArch__MojoZork/
This core can emulate the following systems:
Z-machine Version 1 from 1979 (Discontinued in 1980)
Z-machine Version 2 from 1980 (Discontinued in 1982)
Z-machine Version 3 from 1982 (Discontinued in 1990s)

What games can this emulator possibly run:
Example 1: Zork: The Great Underground Empire (1980)
Example 2: Zork II: The Wizard of Frobozz (1982)
Example 3: Zork III: The Dungeon Master (1982)
Example 4: Enchanter (1983)
Example 5: Starcross (1982)

Some of the extra features that this core offers:
The ability to mainly play the games that came out for the third version of the Z-Machine.
The later versions of the Z-Machine aren't supported within this core, at least not for now.
The libretro core handles it in a way to make text-based games run in a graphical window.
That gives you the ability to simply play stuff with a keyboard, mouse, or even a controller.
There's apparently a multiplayer capability through a server called 'multizorkd' I didn't test.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Numero

https://store.steampowered.com/app/2301080/RetroArch__Numero/
This core can emulate the following systems:
TI-83 from 1996 (Discontinued in 2004)
TI-83 Plus from 1999 (Discontinued in 2004)
TI-83 Silver Edition from 2001 (Discontinued in 2004)

What games can this emulator possibly run:
Example 1: Wormy v1.1 (2008)
Example 2: Projectile Project (2013)
Example 3: Stacker (2014)
Example 4: Sorcery of Uvutu v1.4 (2017)
Example 5: Calculator Street Racing V1.3.1 (2021)

Some of the extra features that this core offers:
The ability to play a huge amount of freeware games created by the fans.
The ability to control the games with keyboard, mouse, or even controller.
The ability to continue without needing to start from scratch, It autosaves.
The ability to utilize multiple save states as well as multiple different apps.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: ScummVM

https://store.steampowered.com/app/2345800/RetroArch__ScummVM/
This core can emulate the following systems:
Adventure Games from 80s / 90s / 2000s and etc.

What games can this emulator possibly run:
Example 1: King's Quest II: Romancing the Throne (1985)
Example 2: EcoQuest II: Lost Secret of the Rainforest (1993)
Example 3: Conquests of Camelot: The Search for the Grail (1990)
Example 4: Space Quest I: Roger Wilco in the Sarien Encounter (1981)
Example 5: Indiana Jones and the Last Crusade: The Graphic Adventure (1989)

Some of the extra features that this core offers:
The ability to enjoy some older adventure games that might otherwise no longer work.
The ability to utilize a controller for playing the otherwise keyboard/mouse only games.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Theodore

https://store.steampowered.com/app/1227442/RetroArch__Theodore/
This core can emulate the following systems:
Thomson TO7 from 1982 (Discontinued in 1984)
Thomson TO7/70 from 1984 (Discontinued in 1984)
Thomson TO8 from 1986 (Discontinued in 1989)
Thomson TO8D from 1986 (Discontinued in 1989)
Thomson TO9 from 1985 (Discontinued in 1986)
Thomson TO9+ from 1986 (Discontinued in 1989)
Thomson MO5 from 1984 (Discontinued in 1986)
Thomson MO6 from 1986 (Discontinued in 1989)
Olivetti Prodest from 1986 (Discontinued in 1989)

What games can this emulator possibly run:
Example 1: Choplifter (1982)
Example 2: Slap Fight (1986)
Example 3: Renegade (1988)
Example 4: Balthazar (1987)
Example 5: Enduro Racer (1988)

Some of the extra features that this core offers:
The ability to run games from all across the main models of the MO/TO family.
The ability to utilize the save states for games, and the rewind feature as well.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: XRick

https://store.steampowered.com/app/1227465/RetroArch__XRick/
This core can emulate the following systems:
Rick Dangerous from 1989 (Discontinued in 1990)

What games can this emulator possibly run:
Example 1: Rick Dangerous (1989)

Some of the extra features that this core offers:
The ability to run Rick Dangerous.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: DirkSimple

https://store.steampowered.com/app/2342900/RetroArch__DirkSimple/
This core can emulate the following systems:
FMV/laserdisc game player from 1980s (Discontinued in 1990s)

What games can this emulator possibly run:
Example 1: Dragon's Lair (1983)
Example 2: Cliff Hanger (1983)

Some of the extra features that this core offers:
The ability to play the two mentioned games as long as you have the game footage.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: PX68k

https://store.steampowered.com/app/1227463/RetroArch__PX68k/
This core can emulate the following systems:
Sharp X68000 from 1987 (Discontinued in 1996)

What games can this emulator possibly run:
Example 1: Rance III: Leazas Kanraku (1991)
Example 2: Xak: The Art of Visual Stage (1989)
Example 3: Fantastic Night Dreams: Cotton (1993)
Example 4: Dead of the Brain: Shiryou no Sakebi (1992)
Example 5: Ys II: Ancient Ys Vanished: The Final Chapter (1988)

Some of the extra features that this core offers:
The core features a few methods to support loading and swapping multi-disk games.
The ability to play a variety of homebrew freeware games alongside the official ones.

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Geolith

https://store.steampowered.com/app/2857800/RetroArch__Geolith/
This core can emulate the following systems:
Neo Geo Multi Video System (MVS) from 1990 (Discontinued in 1997)
Advanced Entertainment System (AES) from 1991 (Discontinued in 1997)

What games can this emulator possibly run:
Example 1: King of the Monsters (1991)
Example 2: Double Dragon (1995)
Example 3: Haō Ninpō Chō (1996)
Example 4: The Last Blade (1997)
Example 5: Prehistoric Isle 2 (1999)

Some of the extra features that this core offers:
This core is aiming for a home-console-first experience and using single file ROMs
Despite the focus on the home experience Geolith also fully supports arcade mode
Geolith also provides adjustable overscan masking and aspect ratio options variety

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
✅RetroArch's build-in 'Netplay' feature should be working correctly with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Core: VirtualXT

https://store.steampowered.com/app/2388330
This core can emulate the following systems:
IBM Personal Computer XT from 1983 (Discontinued in 1987)

What games can this emulator possibly run:
Example 1: Executive Suite (1982)
Example 2: Microsoft Adventure (1981)
Example 3: Nine Princes in Amber (1985)
Example 4: Life & Death II: The Brain (1990)
Example 5: ZorkQuest: Crystal of Doom (1989)

Some of the extra features that this core offers:
Designed to be simple and lightweight yet still capable enough to run a large library of games
Core mainly Intended to run older CGA games and applications from the 80's like PC booters

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
❌Steam's build-in 'Remote Play Together' feature just doesn't work with this core.
❌Other streaming options, such as Parsec, also sadly do not work with this core.
❌Couch multiplayer with two controllers should also not be possible for this core.

Core: Vircon32

https://store.steampowered.com/app/2862100/RetroArch__Vircon32/
This core can emulate the following systems:
Vircon32 from 2022 (Discontinued in ????)

What games can this emulator possibly run:
Example 1: War on the Water (2022)
Example 2: Virconstein 3D (2022)
Example 3: Fierce Soldier (2022)
Example 4: Vircon32 Jam (2022)
Example 5: PartyMan (2022)

Some of the extra features that this core offers:
This console was designed to be as simple as possible to make game creation easier
You can find stuff for this core in various game jams or through other homebrew sites
Vircon32 is an open source project, and anyone can create games for it as they wish

The compability of this core with achievements:
❌There's currently no such compability as far as I can tell, maybe in the future...

All multiplayer options for this core in particular:
❌RetroArch's build-in 'Netplay' feature doesn't seem to be working with this core.
✅Steam's build-in 'Remote Play Together' feature should be working for this core.
✅Other streaming options, such as Parsec, should also be working with this core.
✅Couch multiplayer with two controllers should be working perfectly for this core.

Epilogue: Thanks For Reading

Thanks for checking out my guide, I really do hope that it will help some people out.
It might not seem like it, but It took me a lot of time to put it together, so many hours.
Please: If you notice any kind of a mistake, let me know and I'm going to surely fix it.

[Neopolitan]

This is quite the resource, thanks for putting it all together!

[GaybitBiscuit]

Thank you @Muaka66 your info has been added to the guide

[Muaka66]

Corrections on some info given:
-The Famicom Disk System is listed as releasing in 1983 and ending in 2003, except that it didn't release until '86 and would end in '90. Here's the thing, the Famicom Disk System is NOT the "Japanese NES", it's an add-on FOR the "Japanese NES" simply called the Famicom (short for Family Computer) which released in 1983 and lasted until 2003. Just the Famicom used cartridges, while the Disk System add-on used floppy disks (Legend of Zelda and Metroid were originally FDS disks and not cartridges).
-Under "SameBoy", Donkey Kong Country is listed as releasing in 1994, but this is the SNES version's release. The GameBoy Color version released in 2000.

[dew]

Can someone make this list in spreadsheet, or format it to be more digestible? like put every emulator for x console all together?

[八神アンドレ伊織]

Dolphin was prohibited on Steam version by Nintendo

[moe.jp]

Yeah I have no idea what's going on. NDS netplay doesn't seem to be too popular of a thing so up to date guides (text and video) doesn't exist, or couldn't be found in the several hours of research I did on the topic.

[GaybitBiscuit]

According to docs.libretro.com/library/desmume/ netplay should be possible
They did specify: (Not Download Play, Link-Cable or Wi-Fi emulation), though
I personally haven't tried DeSmuME multiplayer, so I can't confirm what works
But in the official docs it has the '✔' symbol attached to it, so I assume it plays

[moe.jp]

Netplay for Desmume isn't supported/doesn't work. "Core does not support netplay."

[八神アンドレ伊織]

Dolphin too

[八神アンドレ伊織]

PCSX2 runs in Steam version,but with a copypaste from the standalone version