Steam Greenlight
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1,114 ratings
Source and GoldSource engine games and modifications
List of Source engine mods on Greenlight.

Since there are no category options for Source engine based games, I added this collection
Let me know if I should add something.

For list of source games awaible on steam visit the group or the curator list

The Source Engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.

- - - Source - - -

Black Mesa - [BMS] Carlos Montero
Operation Black Mesa - MR.sugar
Wilson Chronicles - Frere D'λrme | SF |
Half-Life 2: Capture the Flag - [HL2CTF]MeNtHoL
Underhell - Mxthe
Portal Remake Mod - CLagaris
NEOTOKYO° - Glasseater
Fistful of Frags - R_Yell
Lost Story: The Last Days of Earth - HopeLess CatE
No More Room in Hell - Xendrid
Hypovolemia - defragen1
The Stanley Parable: HD Remix - Cakebread
Reduction: The Alien Swarm Campaign - XFunc_CaRteR
CONSORTIUM - Interdimensional Games
The Forgotten Ones - Pretador
Fortress Forever - squeek.
Alien Swarm FP - bunny
Infra - Oskutin
Crio-Dead:Memory - DNK
Estranged: Act I - Alan Edwardes
Conversion - MyCbEH
Lambda Wars - Sandern
Lost Squad - DmitRex
The Revenge - lev@n
Half Life 2: Enhancement Mod - Aluminium Ken
Portal: Alive & Kicking - rHetorical
Aperture Tag: The Paint Gun Testing Initiative - Lpfreaky90
Portal 2: Abyss - Pac0master
Crossroads Episode I - lev@n
Saga of Pandoria - Joerilla
Half-Life 2 : Awakening - Bluestrike
Thinking with Time Machine - Stridemann
Silent Escape - Pro-Bones
Rexaura - Mevious
Double Action: Boogaloo - [BS] Vino
Fast Detect - Obergun
Portal Stories: Mel - Lpfreaky90
Jacol - Resurgence
Brainbread 2 - Mr Unknown
Revature Laboratories - fdizile
Codename CURE - Hoobalugalar_X
Left 4 Dead Zero - Cobalt-57 Publishing
Portal: Outside Influence - Elite Treacle
Modular Combat - Aluminum Ken
From Earth - Au-heppa
Transmissions: Element 120 - shokunin000
Anarchy Arcade - SM Sith Lord
Joutomaa - Mephasto
Project-X - Richard Seabrook
Destroyed Aperture - nintendo.erk
FIREFIGHT RELOADED - Cobalt-57 Publishing
Missing Information - #gbn.scart
The Revenge - aptekarr
Spherical Nightmares - WizardExt
CUBE - Another One Brick
Blue Portals: Anniversary Edition - Reepblue
Resurgence: The Union - Jack
Hunt Down the Freeman - Frank Yeager
Portal 2: Timex - RedSkittieFox
Half-Life 2: DownFall - marnamai
Arctic Adventure: Episodes - L1GH7
Iggy azalea - Dayik
Kreedz Climbing - Raptor
Initiative Games - The Dark Citadel

- - - GoldSource - - -

Half-Life: Before - Gua
Cry of Fear - ruMpel
Headcrab Frenzy! - XaeroX
Antarctic Sciences - Moonlitnight
Base Defense - Corvus

Half Life episode 1 2 portal team fortress left 4 dead deathmatch Counter Strike Go Alien Swarm 3d tps fps rts sdk custom gold src goldsource sourceengine source goldsrc collection havoc physics
Items (60)
Black Mesa
Created by cman2k
Prepare for an experience that you will find Nostalgic, exciting and fresh. Black Mesa is a re-envisioning of Valve Software's seminal game Half-Life. You will re-visit the inaugural role of Gordon Freeman and his memorable journey through the Black Mesa...
Operation Black Mesa
Created by Mc.Sug4r
Operation Black Mesa (Opposing force: Source)

Operation Black Mesa is a total remake of Half-Life: Opposing Force. Utilizing the Source engine, Tripmine Studios plans to recreate the Black Mesa Research Facility from the grou...
Wilson Chronicles
Created by Frere D'λrme
English :

Wilson Chronicles is a total Source conversion of Half-Life : Wilson Chronicles using the Source Engine by Valve.

Once you have voted, visit to download and play our latest Demo ! On
Half-Life 2: Capture the Flag
Created by MENthish
Half-Life 2 Capture the Flag brings the fast-paced, run and gun style of classic CTF to the graphics rich environment of the Source Engine like never before. The game mod is set in the post apocalyptic world of Half-Life 2™ where the Combine face the HEV s...
Created by Mxthe
Underhell is a Source Engine Game that will be distributed in Episodic releases.
Prologue has been released on March 3rd, 2011.
Chapter 1 has been released on September 1st, 2013.
Portal Remake Mod
Created by CLagaris
Portal Remake Mod is a revamped version of Portal. Portal Remake is a mod for Portal 2, that includes many new innovative features!

Portal Remake also has brand new models, such as the improved GLaDOS and four different cores - all of whic...
Created by Glasseater
NEOTOKYO° is out for Download now! Check out the Links at the end of the discription!

NEOTOKYO is a first person shooter that provides a visceral & realistic combat experience in a rich futuristic setting. It is greatly influenced by our admiration f...
Lost Story: The Last Days of Earth
Created by Source CatE
Game Overview

Lost Story: The Last Days of Earth - is a sci-fi action adventure first person shooter set in the Half-Life universe, which allows you to witness the events between Half-Life and Half-Life 2.

You will be strugglin...
No More Room in Hell
Created by ☭XƎNDRID☭
"When there is no more room in hell, the dead will walk the earth."

We have been Greenlit by the community! Your support has given our mod a much brighter future! Thank you! No More Room in Hell will always be 100% free. Once officially on Ste...
Created by defragen1
100% free and requires only a FREE installation of Alien Swarm!

Hypovolemia is a new 3rd person shooter with an emphasis on aggressive, thought provoking gameplay that rewards critical thinking and intelligent positioning for both the individual ...
The Stanley Parable
Created by Cakebread
Follow the game on Twitter


What is The Stanley Parable: HD Remix?

It is the remake/sequel/expansion to The Stanley Parable, a Source mod released in 2011. The game is an expe...
Reduction: The Alien Swarm Campaign
Created by XFunc_CaRteR
You are a squad of "Offworld Drop Marines".

You are engaged in a war with hostile creatures in the Outer Systems.

Your tour ending, you have returned to Earth.

And now you learn the war has reached your home planet...

What will you do?

Will ...
Created by iDGi
A PURE role-playing experience that obliterates the fourth wall...

First Person. A bright and optimistic Sci-Fi future. True interactive narrative.

Possibly the most ambitious indie game ever made...

The Forgotten Ones
Created by Pretador
You will experience a story like no other from the protagonist Grobuskna Vladinov's eyes, his family was murdered during the war, Grobuskna and his family was taken captive by Schienzel. Schienzel is a fiction of Josef Mengele, a strong similarity.
Fortress Forever
Created by squeek.
Requires only a FREE installation of the Source SDK Base 2006, download and play today at

Fortress Forever is a Source mod inspired by the earlier versions of the Team Fortress series (Team Fortress Classic ...
Half-Life: Before
Created by Gua
Download Half-Life: Before -

Official website:

***Vote this if you want it to be available on Steam! This is a free mod. We will not sell it, it will only make it easier for you to download ...
Cry of Fear
Created by ruMpel
***Vote this if you want it to be available on Steam! This is a free mod, and should stay free. We will not sell it, it will only make it easier for you to download if it appears on Steam***


Download Cry of Fear here:
Alien Swarm FP
Created by bunny
This is a first person view modification of Valve’s Alien Swarm:

Originally posted by valve:
The game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine cla
Created by Oskutin
INFRA puts you into the shoes of a simple structural analyst. Nothing more than a quiet desk jockey assigned to survey some routine structural damage. Quickly though, your mission turns from a mundane trek to a fight for survival. Your tools are sim...
Estranged: Act I
Created by Alan Edwardes
Estranged is a free Half-Life 2 mod built on the Source Engine, available to players running Windows, Linux and Mac. It doesn't require any games to play.


Estranged tells the story of a lone fisherman, whose ship is stran...
Lost Squad
Created by DmitRex
EN - Lost Squad - is Source Engine based game about what happened to Barney Calhoun after Half-Life 2: Episode One events and why he was not in Half-Life 2: Episode Two. Cause it is an unofficial mod and we have our own plot it is not called Blue Shift 2....
Lambda Wars
Created by Vortal Storm
Lambda Wars is a free multiplayer Source Engine modification for Alien Swarm set in the Half-Life 2 universe that brings the war between mankind and their brutal Combine overlords to a traditional real-time strategy (RTS) setting. Lead the uprising...
The Revenge
Created by levan
The Revenge is a first person game based on Half-Life universe. The main character is Anton Logov.
He has to get out of the city in order to deliver something important for the Resistance Forces.
It would seem like easy task - to come round Alliance road...
Portal: Alive & Kicking
Created by Rhetorical Games
"I'm often nit-picky, but even with my intimate familiarity of Portal I can see that nothing has been overlooked. Every tile on every panel has been revisited with loving detail. Not only have the visuals been updated to match Portal 2, but the weake...
Aperture Tag: The Paint Gun Testing Initiative
Created by Motanum
Aperture Tag: The Paint Gun Initiative is a mod for Portal 2. Inspired by Tag: The Power of Paint, Aperture Tag is just what it sounds like. A Paint Gun in Aperture Science. Featuring a new personality core, in a new story, covering many areas of Ap...
Portal 2: Abyss
What is Abyss?
Abyss is a free Custom modification for the multiple Award winning game: Portal 2 created by Team Abyss. Abyss aims to give a new game experience to the players by introducing a custom story based on multiple choices with a ...
Crossroads Episode I
Created by levan
Results of the first experiment. The short story of the first accident.

There are many parallels between the real World and the Crossroad`s Universe. The only difference is that science in Crossroads makes big steps in its development and discovers more...
Divinia Chronicles: Relics of Gan-Ti
Created by Dieblein
Divinia Chronicles: Relics of Gan-Ti is a single-player, classic-style Action-RPG. With influences ranging from Ocarina of Time to Final Fantasy, this action-oriented title seeks to revive the vintage flavor and vibe of the classics in an original world wi...
Half-Life 2 : Awakening
Created by Bluestrike
In this Free mod, released in 2007, you play as Adrian Shepard right before Gordon Freeman arrives in City 17.
Its also a bit of an Antlion origin story.
Note that future official releases in the Half-Life saga might contradict with this mod.

The mod ...
Thinking with Time-Machine
Created by Owlahk
Deep within the facilities at Aperture Science lies a secret research laboratory that was locked and closed off... until it was found by robots.

Thinking with Time Machine is a Portal 2 mod in which you will find and use a Time Machine to create...
Silent Escape
Created by Pro-Bones

Silent Escape is a first person shooter game, which events are unfolding parallel to the Half-Life 2 story. When situation in Сity-17 started to get out of control, the scientists had organized the plan of "Silent Escape". It was designed...
Created by Mevious
Rexaura is a mod for Portal. It is a story campaign with 20 chambers teaching and testing your ability to use some interesting new mechanics involving High Energy Pellets.

"It’s utterly delightful, probably the best chunk of non-Valve Portal modding ...
Double Action: Boogaloo
Created by [BS] Vino

Double Action is a stylish multiplayer game about diving, flipping, and sliding your way into an action movie mayhem. It's completely free, runs on Valve's Source engine, and is [url=http://www.doubleactiong...
Fast Detect
Created by Obergun
The project is ready , there is the final stage of development

FAST DETECT is a Sci-Fi horror action.
The game is set in a Post-Apocalyptic world full of mysterious anomalies,
Dark Arts, very terrible forms of technology, weapons and equipment.
Portal Stories: Mel
Created by 🍪 Anna
Portal Stories: Mel is an upcoming free to play mod based in the Portal universe.
It tells an entirely new story about a new protagonist called Mel who travels with a new personality core and faces a new, still unknown threat.

In the early years of Ap...
Headcrab Frenzy!
Created by XaeroX
Headcrab Frenzy is a free dynamic action Half-Life mod which allows you to quench a desire to destroy these little bouncy critters to your heart's content, hold records and try your hand at cooperative gameplay, competing in public statistics...
BrainBread 2
Created by Unknown
An unknown outbreak, a world in chaos. Few have survived, you'll have to stay strong. Based on the big hit BrainBread for Half-Life 1 comes its spiritual successor which will offer the old BrainBread feeling along with more neat features to immerse you in ...
Codename CURE
Created by Hoobalugalar_X
Codename CURE is a first person, co-operative zombie game with support for up to five players, providing immersive, fast-paced zombie fragging with fully dynamic/objective based missions.

As a team of special military operatives utilising a range of po...
Portal: Outside Influence
Created by Elite Treacle
The war is over. Mankind lost. Scattered and spread across the planet, the survivors search for refuge in the ruins of the old world. One of these stragglers stumbled across something that hasn't been seen by outside eyes for a long time...

Modular Combat
Created by •Aluminum Ken
Modular Combat is a role-playing shooter based in the Half-Life universe, that has been out since 2008.

The Resistance, Combine, and Aperture Science are testing the HEV Mark VI Combat System. Combatants face off against each other, and monsters,...
From Earth
Created by Au-heppa
From Earth is a science fiction first person game where the player, taking on the role of Zenaida Liu, lands on an alien planet that has never been visited by humans before. Pursued by the planet's government, she must find her partner Anthony Yarem...
Transmissions: Element 120
Created by shokunin000
Transmissions: Element 120 is a short, free, single player experience set in the Half-Life Universe featuring a unique gravity defying weapon that allows you to jump buildings and sustain large falls.

The story takes place at a mysterious date & ...
Anarchy Arcade
Created by SM Sith Lord
Your PC & the internet in a MULTIPLAYER 3D world! Anarchy Arcade allows you to explore your computer from the inside as you walk around your files and the internet with your friends in a virtual 3D world.

Just like your standard desktop, you can create...
Created by Mephasto

Half-life 2: Episode Two modification

Enter the mind of Filip Valkas, who lost his parents in the Seven Hour War, and take your revenge on your Combine captors in a new story centred on the Half-Life Universe. Pick up your own cro...
Created by Rich
Prospekt begins in the Nova Prospekt prison in the Half-Life universe. Gordon Freeman is slowly being overrun by soldiers in the prison, however unknown to him, his Vortigaunt allies manage to find some help from a forgotten hero.

Created by Former
NOTE: FIREFIGHT RELOADED is a Half-Life 2 Mod that is COMPLETELY FREE and contains no microtransactions or any freemium features, if you wish to find more information or have a question unanswered, please check out our [url=http://steamcommun...
Missing Information
Created by #gbn.scart
You think you know the world of Half Life 2? Experience content that was deleted or changed in the course of Half Life 2's development in Missing Information, a single-player Source modification. Not only does this mod restore old models, levels, weapons, ...
Spherical Nightmares
Created by WizardExt
About the mod
Spherical Nightmares is a free Half-Life 2: Episode Two single-player modification.

The story takes place in the Half-Life universe and you take the role as Gordon Freeman. Your journey begins in an unknown location.

Created by AASC

CUBE is a first-person, single-player puzzle adventure game based on Source Engine and set in a huge and constantly...
Blue Portals: Anniversary Edition
Created by Rhetorical Games
Blue Portals is a unique Source Engine modification created for the original Portal, developed entirely by two people and released in November 2010 - five years ago! And in honor of its fifth anniversary, we've decided to bring it to Steam. Unlike most oth...
Hunt Down The Freeman
Created by Frank The Duke

"Mitchell was a marine tasked on a mission in Black Mesa. During the mission, his squad was wiped out by Gordon Freeman. Mit...
Created by BoxandRocks

PUNT is a single player, first person puzzle game in the vein of the Portal series and Quantum Conundrum. In game, you're equipped with the Enhanced Cylindrical Handling Operating Device, otherwise known as the ...
Half-Life: A Place in the West
Created by Yorick
What is A Place in the West
Half-Life: A Place in the West is a fan-made comic book set within Valve's acclaimed Half-Life universe. A Place in the West follows three characters who are each in their own way drawn to a...
Alien Swarm: Reactive Drop
Created by Dmitriy
Alien Swarm: Reactive Drop extends Alien Swarm, bringing more of everything: maps, aliens, game modes, guns... And most importantly, we want to add Steam Workshop support.

Key features:
- Steam Workshop support (planned)
- Campaigns: Area 9800, Dead C...
Portal 2: Desolation
Created by BoxandRocks

You wake up in a 1976 Extended Relaxation Annex stasis chamber, one of many lodged in a ruined office complex located near the base of Aperture Science Innovators after a long fall with details scarce to the pla...
Half-Life 2: DownFall
Created by marnamai

DownFall is a free Half-Life 2 single-player mod taking place in the White Forest surroundings.
You're once more putting on the HEV suit as Gordon Freeman. Your mission is to recover a newly developed technology by t...
Arctic Adventure: Episodes
Created by L1gh7 / BriJee
Arctic Adventure is a FREE episodic modification set in Half-Life Universe.
In this mod you will ride quick as the wind through the Arctic landscapes and fire the familiar and some completely new weaponry.
Play loud or look for by-pass routes, solve puzz...
Classic Offensive
Created by dayik4s [*]
Classic Offensive is a free modification for Global Offensive, aiming to recreate the 1.6 vibe while keeping best of both games....
Kreedz Climbing
Created by Raptor
Kreedz Climbing is a unique, non-violent, puzzle-platformer type total conversion for Half-Life 2 where the player attempts to climb or jump his or her way to the top of a given environment, in a race against time and against other players.

Base Defense
Created by Cypher
What is Base Defense?
It is a co-op modification for Half-Life based on horde-style and RPG systems. You need to choose one of three classes, then join the fight against most dangerous monsters which are hunting you. Every class has it's own abil...
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Axøec  [author] Apr 26, 2017 @ 5:36pm 
Thanks @Gλm³r#¹ | א‎₀

I found this one today

And we should take down Abatron from the list it no uses source anymore since 2015  [author] Apr 12, 2017 @ 9:05am 
@Okay Studios This is a collection only for SOURCE engine and GOLD source
Axøec  [author] Apr 10, 2017 @ 3:56pm 
Ty @Gλm³r#¹ | א‎₀
Gλm³r#¹ | א‎₀ Feb 16, 2017 @ 12:21pm 
@Jrockten I don't think that Greenlight Concepts count...
Axøec  [author] Jan 13, 2017 @ 4:28pm 

Hello sir,well we are Source Engine Games [A steam mentor & group of fans] whose mission is to collect & share with the community all games/mods on steam & web that use source engine[all versions] in them

added to the list,thanks
marnamai Jan 13, 2017 @ 6:56am 
Hi, I don't know what criteria is used to get onto this collection, but is it possible for my HL2 mod to be added?