Sonic Adventure DX

Sonic Adventure DX

1,345 ratings
By Danhanado and 1 collaborators
The definitive way to play Sonic Adventure.

BetterSADX is an easy to install / automated patch that transforms the Steam version of Sonic Adventure DX into an enhanced version with many more features added by the community over the last several years.

Get updates, help and discuss - join the BetterSADX Steam Group.

Latest Version: 4.3.4 (Updated 22 June 2018)
Install & Updating

Download the latest version[] of the BetterSADX patch installer.

During install, you will be given 3 options:
  • BetterSADX + Dreamcast Conversion - Full experience with improved DC textures and lighting
  • BetterSADX (Standard) - For those who prefer the DX look
  • Minimal / Speedruns - Basic setup with only a handful of mods suitable for speedrunning
Please join the Steam group and/or sign up for email updates[] to be notified when BetterSADX is updated.
Dreamcast Conversion
An incredible Dreamcast Conversion mod by PkR, TheArcadeStriker, and SonicFreak94. This project aims to return the PC version of Sonic Adventure DX to it's appearance on the original Sega Dreamcast. This includes the restoration of the palette lighting engine, as well as ports of the Dreamcast land tables, level models, and textures.

Resolution Options
Use any custom resolution. With “Windowed Fullscreen” and “Stretch Fullscreen” (enabled by default), you can specify resolutions larger than your native which will downsample.

Improved Graphics, Sound and Fixes
Texture filtering, Mipmapping, better sound and an extensive range of layout and bug fixes, created by the community.

Mod Support
BetterSADX includes and relies on the latest version of SADX Mod Manager, which provides a clean entry point and effective way to manage mods for the game! All of BetterSADX is fully modular, meaning, you can configure and tweak it here to your heart's content.

Full Controller Support
Includes the latest version of the Input Mod (By SonicFreak94). This provides improved support with use of the right stick and trigger buttons. It also includes Smooth Cam to give you a smoother first person camera.

Super Sonic in Action Stages
Once you’ve completed the 7 main story modes, you can play as Super Sonic who is faster, invincible and can run along most water. He loses 1 ring per second and will lose the power once his ring count hits 0.

To activate:
  • Make sure you've completed the Super Sonic story at least once.
  • Play as Sonic.
  • Collect 50 rings.
  • Jump and press the B button to transform into Super Sonic (or to transform back).
Please Note: Some stages and items/set-pieces (which force you to spindash) will auto-transform Sonic back to his normal form to stop the game from crashing. If you are unable to transform for this reason, Sonic will say "Huh?".

In the past, this feature was restricted to Super Sonic Adventure mode, however, it is now usable on any save file that has the Super Sonic story completed. It's possible this will change in the future, however.

Dreamcast DLC
The wonderful DLC mods by PkR! These mods allow you to experience the original Dreamcast DLC at any time by toggling them from the Mod Manager! Simply open the game and choose configure to bring up the mod manager.

Playable Game Gear titles
The Game Gear games from previous SADX releases are back.
  • Sonic the Hedgehog
  • Sonic Drift
  • Sonic Chaos
  • Sonic Spinball
  • Sonic Labyrinth
  • Sonic the Hedgehog 2
  • Dr. Robotnik's Mean Bean Machine
  • Sonic Triple Trouple
  • Sonic Drift 2
  • Tails' Skypatrol
  • Sonic Blast
  • Tails Adventure
You can unlock them by collecting emblems and beating missions in Mission mode. It is recommended you run the game in 640 x 480 if you plan on playing these.

Seamless Integration
You can enjoy all the features just from running the game via Steam and choosing Play or Configure, and in addition, this also supports Steam Achievements.

Discord Rich Presence
Show what you're doing in-game to your Discord friends and servers.
When you launch the game from Steam, you can still choose “Play” or “Configure” to change settings. Other than the resolution, we recommend you leave the settings as their defaults.

Configure Mods
Configure opens the SADX Mod Manager, where you can manage and tweak what we've provided to you in any way you'd like. We've included the mods in the optimal order by default as well, but for future reference, mods have a priority system. The lower on the list the mod is, the higher the priority for that mod is, meaning if multiple mods replace the same thing, only the lowest one on the list will show it's changes.

Set your resolution
By default, the installer will set your desktop resolution.

To set your own resolution:
  • Start the game from Steam and choose the Configure option.
  • Click the “Options” tab.
  • Next to “Use Custom Resolution” you can specify your own or click the “Native Resolution” button to use what your Desktop is currently set to.
  • Click “Save” and close the window or click “Save and Play”.

Converting your Steam saves
This is now done automatically during the install.
If a "savedata" folder already exists in your game folder from a prior install of BetterSADX, then no saves will be copied (to prevent overwriting and save loss)

When installing, there is a "Minimal / Speedruns" option.

Choosing this will perform only a basic install consisting of the SADX Mod Manager and the following mods.
  • Camera Code Error Fix
  • XInput Mod
  • Frame Limiter (disabled but turn it on if the game runs >60FPS)
Thanks for Reading!
CheatFreak - HD GUI 2 Button Prompts, Planning & Design
Carlmundo - Mod Conversion, Patcher, Planning & Design
Danhanado - Original Guide and BetterSADX Logo
SonicFreak94 - Mod Manager and Loader, SADX Fixed Edition, Input-Mod, Pause Hide, Smooth Camera, Super Sonic Mod, HUD Scaling, Camera Code Error Fix, Idle Chatter, SADX-DC-Lighting
MainMemory - Mod Manager and Loader, Modding Tools, Achievements, Save Tool, Egg Carrier Ocean Music, Misc Help
PkR - Dreamcast Conversion, Dreamcast DLCs, Work on SADX:FE, Sound Overhaul 2, Time of Day, SA1 Style EXE Icon (4.2+), HD GUI 2, Feedback on HD GUI 2 Button Prompts, Feedback and Help in general
SuperCoolSonic - SET Fixes Mod (now bundled in Dreamcast Conversion)
Dark Sonic - Work on HD GUI 2 Mod
Sonikko - Work on HD GUI 2 Mod, Feedback on HD GUI 2 Button Prompts.
Speeps - Work on HD GUI 2 Mod
SteG - Work on HD GUI 2 Mod
SuperSonic16 - DiscordSADX Mod
ZorakaroZ - Updates to MimicDCTextures
Spoonm - App Launcher Clone
VeritasDL - Camera Code Error Fix
Shanekilz - Help with figuring out Speedrun Stuff
IndyTheGreat - Water texture fixes
Jeff - Past work on stuff
TheArcadeStriker - Dreamcast Conversion (past work)
RonnChyran - App Launcher based on BOIL (past work)
Yoyoyoshio - xBRZ Textures (past work), Feedback and Testing
Endri - Super Sonic in Action Stages (Past Work)
OldClassicGamer - Inspiration that got this project kicked off
Sonic Retro - Resource for SADX Modding

This patch is designed to only work for the Steam version and will not install unless you have a legitimate Steam version installed.

Frequently Asked Questions
Need Help? Go here to find out how to get help!

Need More Mods?
Here's a few noteworthy places! Note that some of the mods on the below pages are actually included.
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SAD BOYS FOREVER 7 hours ago 
как поменять управление на клаве после установки???
Fate For Windows 22 hours ago 
@DiamondJordy *modpack
@FirestormFox Is Sound Overhaul enabled?
FirestormFox Nov 13 @ 7:03pm 
Just installed it and both the music and voices aren't working.
DiamondJordy Nov 4 @ 2:18pm 
This is perfect, the mod is amazing!
Fate For Windows Nov 4 @ 9:24am 
*mod installer
Fate For Windows Nov 4 @ 9:24am 
@sans obama gaming Update the Dreamcast Characters Mod and next time you install SADX on a PC don't use BetterSADX and instead use PkR's mod.
sans obama gaming Nov 2 @ 12:49am 
Everything's implemented right, but there's one minor issue I'm having in the cutscene before the Perfect Chaos fight: Sonic doesn't transform into Super Sonic. I mean, the cutscene plays out all the way fine but instead of Super Sonic at the end it's the regular Sonic model. Again, small, but I'm hoping that I'm just overlooking a mod/code option.
PH Nov 1 @ 7:39pm 
I really like the BetterSADX + Dreamcast Conversion!! But, I really want to try the Dreamcast Conversion without the BetterSADX settings, like the original Sonic Adventure from Dreamcast!!!
jose_silveira20 Oct 27 @ 1:06pm 
@ extrememario95
I dunno why you would prefer the underwhelming DX title screen. The original from Dreamcast gives the game such a nicer presentation, specially with the restored ripple effect! Cheers to the modders for that.
jose_silveira20 Oct 27 @ 12:59pm 
Game crashes at the second section of Speed Highway when Dreamcast textures are turned off in the Dreamcast Conversion config. Runs as it should with the Dreamcast textures turned on, but I prefer the DX textures for this particular stage. Would be nice if it could be fixed.