Sonic Adventure DX

Sonic Adventure DX

759 ratings
BetterSADX 4.0 - The Dream Update
By Danhanado and 2 collaborators
The definitive version of Sonic Adventure.

BetterSADX is an easy to install / automated patch that transforms the Steam port of Sonic Adventure DX into an enhanced version (of the original port) with many more features (see full list below).

It includes several community created mods that improve your SADX experience.

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

Latest Version: 4.0 (Updated 9 February 2017)
Install & Updating
How to Install
First, download the latest version of the BetterSADX patch installer. (4.0)

Verify that you have the steam version of Sonic Adventure DX installed, and then run the patch, and follow the easy steps to install it.

At one point you are given the choice of what edition of BetterSADX you would like to install. Most people will want to choose the default one, but if you preferred the look of Sonic Adventure DX, rather than the Dreamcast original, or if you are a speedrunner of Sonic Adventure DX, these might be suitable options for you.

How to Update
Unfortunately, with the major release of 4.0, users that would like to update from a 3.X version will need to back-up their saved games, reinstall the Steam version, and reinstall the latest version. Sorry for any inconvenience this may cause. You can find details on this here.

Occasionally the SADX Mod Manager also has an update, if you want, you can drop the contents of the file it downloads in your Sonic Adventure DX install folder (SteamApps/Common/Sonic Adventure DX) to update the mod loader yourself. We always update the Mod Loader in our hotpatches and updates as well so feel free to ignore that if you want. You can find additional details on this here.
Dreamcast Edition
A new feature added in 4.0 is the inclusion of the incredible Dreamcast Edition 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 level data 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 and Fixes
Texture filtering, Mipmapping 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 entrypoint 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.

Additional Twinkle Circuits
There are 5 additional courses that were used on the Dreamcast through their online service and were previously inaccessible on PC without hacking. You can now access them via the Trial Mode's Subgame menu with one new course for each character.

To unlock the Subgame:
  • Sonic, Amy, and Big have access to it after they beat Twinkle Park.
  • Tails, Knuckles, and Gamma can access it after finding a pass in the grass obtainable after beating their respective stories.
The original Twinkle Circuit can still be played in the Adventure field for all characters.

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.
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
To set your 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”.

VSync & Anti-Aliasing
To enable these features, you will need to configure them via your graphics driver control panel.

As of 3.4, there is an experimental V-Sync toggle for when the game is ran in True Fullscreen as opposed to Windowed Fullscreen. It is recommended that if you are running Windows 7, 8, or 10, you have the Aero mode enabled, as Windowed Fullscreen actually relies on Aero for vertical syncing.

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)

We love speedrunners! <3

To show this we have provided a easy method, legal method to access to a speedrun-legal copy of the game.

This is now accessed when installing BetterSADX- via the Minimal install option.
Choosing this will perform only a basic install consisting of the SADX Mod Manager and the following mods.
  • Camera Code Error Fix
  • Input-Mod
  • Frame Limiter

Additional Speedrun Related Notes.
  • BetterSADX 3.5 is the first version made to be Speedrun oriented, no versions below 3.5 should be permitted for use by speedrunners.
  • As of BetterSADX 3.6, speedrunners do not need to do anything to mitigate the voice lags that cause difficulty in one-cycling the Egg Hornet with Sonic. The change that corrected this issue was the shift from voices using WMA to ADX, this change also mitigates all other voice lags throughout the whole game. Special thanks to SonicFreak94 and MainMemory for this new feature!
  • As of BetterSADX 4.0, the patcher now has a Minimal Install mode, made specifically for making the game suitable for speedrunning with no additional configuration necessary.
  • Frame Limiter is a mod we've added in 4.0 to attempt to prevent the game from running at above the standard 60fps. According to Shanekilz, there has long been issues with the game running at above 60fps, creating a potential time discrepancy. This mod should prevent this from occurring.
  • As of 4.0 we've replaced the Xinput Fix with Input-Mod by SonicFreak94. All this does is change the engine with which input is handled to a less outdated one, and will have no effect on inputs themselves, meaning it is speedrun-legal.
Thanks for Reading!
CheatFreak - Twinkle DLC Circuits, XInput button prompts, Video Encoding, Planning & Design
Carlmundo - Mod Conversion, Patcher, Planning & Design
Danhanado - Original Guide and 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 Edition Mods, Egg Carrier Garden Water Fix, Mystic Ruins Final Egg Fix
TheArcadeStriker - Dreamcast Edition Mods
Jeff - SA_Branding which was re-implemented as DC_Branding_Lesser
Dark Sonic - Work on HD Dreamcast UI Mod
ZorakaroZ - Making a mod out of the Dreamcast Camera files
RonnChyran - App Launcher based on BOIL (past work)
Spoonm - App Launcher Clone[]
Yoyoyoshio - xBRZ Textures (past work), Feedback and Testing
Endri - Super Sonic in Action Stages (Past Work)
VeritasDL - Camera Code Error Fix
Shanekilz - Help with figuring out Speedrun Stuff
IndyTheGreat - Water texture fixes
OldClassicGamer - Inspiration
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 legal purchased copy installed. Sega owns the rights to Sonic and all related content.
Our mission is to provide easy access to the efforts of those in the Sonic community in a way that is still profitable for SEGA.

View here[].

Looking for our old FAQ Section?
Join the official BetterSADX group and receive update notifications and discuss the patch in depth with us there! Please do not post in the comments if you have an issue, as we now have a discussion board to make tracking issues much easier!

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.
TheGeekCritique A cool guy does awesome youtube videos, sometimes on Sonic stuff.
BlazeHedgehog Another cool guy that does Sonic youtube content.
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Claire "Lightning" Farron Apr 26 @ 9:35pm 
This will work with an exsisting save file, right?
A Box of Apple Juice Apr 24 @ 1:48am 
This is a very cool update, but is there a way to have it run in windowed mode? I've messed with all the graphic settings having to do with resolution and windowed/fullscreen mode but it keeps starting up in fullscreen, unable to be changed. Am I missing something?
cheatfreak47  [author] Apr 19 @ 7:18pm 
By reading the "Install and Updating" section above.
barr65 Apr 19 @ 3:50pm 
how do you download this?
*$*SoNicWave*$* Apr 12 @ 5:50am 
Can I change my controls somehow?
Cosmic Dingo Apr 9 @ 11:55am 
Thank you so much, it works perfectly :D I was currently dealing with a glitch in the egg walker battle, making the game unbeatable. But this version eliminated that glitch and many other bugs along with it. Also love playing the game in full widescreen!
wolfgang GK Apr 3 @ 8:14pm 
@cheatfreak47 It seem to work, Thanks! It's werid though, I had downloaded with the dreamcast edition before and it was working just fine, even with the lighting effects. I'm just assuming it must have been updated along with the mod loader.
sshadow5001 Apr 3 @ 4:30pm 
I don't suppose anyone knows how to add modified characters to the game that also use the "CHRMODELS.DLL" file? (I'm using BetterSADX)

from what I've read you should back up your system files and also rename "CHRMODELS.DLL" to "CHRMODELS_orig.dll" so that the Mod Manager still works.

however for whatever reason when I do this the game goes from 4:3 to 16:9 amd all the music seems to dissapear? why would changing "CHRMODELS.dll" do this? surely this file only effect character models right?

is there something contained in the "CHRMODELS.dll" file provided by BetterSADX that would effect this much of the game?
oh no china being invaded Apr 2 @ 11:21pm 
Hey Kitty thanks that worked. Luckily the game isnt very big by today's internet standards.
LuisElErizo2003 Apr 2 @ 10:41am 
Cool, lo instalaré antes de jugar el sonic adventure por primera vez