Sonic Adventure DX (Steam)

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This page may require cleanup to meet basic quality standards. The specific problem is: update the page with SADX Mod Installer or other mods where appropriate. You can help by modifying the article. The discussion page may contain useful suggestions.

This page is for the Steam version. For the original port, see Sonic Adventure DX. For other versions, see Sonic Adventure DX (2011).

Sonic Adventure DX
Sonic Adventure DX cover
Sonic Team
Sonic Team USA
Release dates
Windows September 16, 2014
Sonic Adventure DX (Steam) guide on StrategyWiki
Sonic Adventure DX (Steam) on MobyGames
Sonic Adventure DX (Steam) on Wikipedia
Sonic Adventure
Subseries of Sonic the Hedgehog
Sonic Adventure DX 2004
Sonic Adventure DX (2011) 2011
Sonic Adventure 2 2012
Sonic Adventure DX (Steam) 2014
Dreamcast Collection
Sega Bass Fishing 2011
Sonic Adventure DX (2011) 2011
Space Channel 5: Part 2 2011
Crazy Taxi (2011) 2011
Sega Bass Fishing (Steam) 2014
Sonic Adventure DX (Steam) 2014
Space Channel 5: Part 2 (Steam) 2014
Crazy Taxi (Steam) 2014

Key points

Updated version of PC re-release of game with more graphical options and fixed issues.
Only available through Steam and no update for those owning physical or DRM-free version.
Missing all Game Gear games from the GameCube and 2004 PC versions; use SADX Mod Installer.
Aspect ratio is locked to pillarboxed 4:3; use SADX Mod Installer.
The game may occasionally cap the frame rate at about 48 FPS instead of 60 FPS; SADX Mod Installer may help.

General information

Sonic News Network - A massive wiki for the Sonic the Hedgehog universe
Sonic Retro - A huge fan site for everything Sonic the Hedgehog. Mods for all the games can be found here
Steam Community Discussions


Source DRM Notes Keys OS
Humble Store
Icon overlay.png
DRM-free after installation through Steam client (see notes)
Create a steam_appid.txt file in <path-to-game> containing 71250 to run without Steam.[1]
All versions require Steam DRM.
A faithful higher resolution desktop icon can be downloaded from the Files section.

Essential improvements[edit]

SADX Mod Installer[edit]

Allows to set resolution, frame rate settings, HUD scaling etc. before installation (in custom mode), and auto-detects desktop resolution.
Supports Steam, 2004, DC Collection/Remastered and can also be installed over BetterSADX.
Has multiple mod presets (Dreamcast, Enhanced SADX, Original), a guide mode for selecting individual mods to install, and a custom mode for full control
A list of additional recommended mods can be found here.
Downgrades the game to the 2004 port. Most of the new tweaks from the 2011 and Steam ports are removed/rendered inaccessible for this reason.

Game data[edit]

Configuration file(s) location[edit]

System Location
Linux (Proton) <Steam-folder>/steamapps/compatdata/71250/pfx/[Note 1]

Save game data location[edit]

System Location
Windows %USERPROFILE%\Documents\SEGA\Sonic Adventure DX\
Linux (Proton) <Steam-folder>/steamapps/compatdata/71250/pfx/[Note 1]
BetterSADX moves the save file to <path-to-game>\savedata

Save game cloud syncing[edit]

System Native Notes
Steam Cloud

Video settings[edit]

Configuration tools graphics tab.
Configuration tools graphics tab.
Graphics feature State WSGF Notes
Widescreen resolution
Pillarboxed 4:3. Use SADX Mod Installer.
4K Ultra HD
Use SADX Mod Installer.
Field of view (FOV)
Borderless fullscreen windowed
Use SADX Mod Installer.
Anisotropic filtering (AF)
See the glossary page for potential workarounds.
Anti-aliasing (AA)
FXAA on/off in-game.
Nvidia card owners can force any kind of anti-aliasing with Nvidia Inspector with compatibility flag 0x080000C1 as long as they are using a 4:3 resolution (e.g. 1200x900 on a 1600x900 monitor). If using SADX Mod Installer, anti-aliasing can be forced via respective GPU manufacturer's control panel.[2]
Vertical sync (Vsync)
If using SADX Mod Installer, you may need to force it on.
60 FPS
Cutscenes are locked to 30 FPS.
120+ FPS
Gameplay is locked to 60 FPS.
High dynamic range display (HDR)

Input settings[edit]

Configuration tools input tab with keyboard.
Configuration tools input tab with keyboard.
In game setting window for keyboard.
In game setting window for keyboard.
Configuration tools input tab with controller.
Configuration tools input tab with controller.
In game setting window for controller.
In game setting window for controller.
Keyboard and mouse State Notes
Mouse acceleration
Mouse sensitivity
Mouse input in menus
Mouse is not used in menus.
Mouse Y-axis inversion
Controller support
Full controller support
Controller remapping
Controller sensitivity
Controller Y-axis inversion
Controller types
XInput-compatible controllers
Xbox button prompts
Uses Xbox 360 prompts by default. For Xbox One prompts, use SADX Mod Installer, disable the included Xbox 360 Prompts mod, then install the Xbox One Prompts mod.
Impulse Trigger vibration
DualShock 4 controllers
See the glossary page for potential workarounds.
Tracked motion controllers
Generic/other controllers
May require the Input Mod bundled with SADX Mod Installer for DirectInput controllers.
Button prompts
Enable the included HD GUI 2 mod and disable the Xbox 360 Prompts mod to use Dreamcast controller prompts. For Nintendo Switch Pro Controller prompts, use SADX Mod Installer and then install the Switch Pro Prompts mod.
Additional information
Controller hotplugging
Haptic feedback
Simultaneous controller+KB/M

Audio settings[edit]

In-game settings.
In-game settings.
Audio feature State Notes
Separate volume controls
Sound, voice and music.
Surround sound
On by default.
Closed captions
Mute on focus lost


Language UI Audio Sub Notes
Fan translation, available here.

Issues fixed[edit]

Low FPS[edit]

If the FPS is stuck in the 40s and won't rise to 60, disable the in-game FXAA and Vsync and instead, force them through the Nvidia/Radeon control panel.

Sky Chase too difficult[edit]

Reduce resolution to 640x480[3]


This might be caused by BetterSADX.[citation needed]
Setting an even lower resolution, such as 320x240, makes the level even easier, however this may have other unintended consequences, as the original Dreamcast version ran at 720x480 (in 4:3).

Other information[edit]


Technical specs Supported Notes
Direct3D 9.0c
Shader Model support 3.0
Executable 32-bit 64-bit Notes

System requirements[edit]

Minimum Recommended
Operating system (OS) XP
Processor (CPU) Intel Pentium 4 3.0 GHz
System memory (RAM) 2 GB
Hard disk drive (HDD) 1.8 GB
Video card (GPU) Nvidia GeForce 7300 series
ATI Radeon X1600
256 MB of VRAM
DirectX 9.0c compatible


  1. 1.0 1.1 File/folder structure within this directory reflects the path(s) listed for Windows and/or Steam game data (use Wine regedit to access Windows registry paths). Games with Steam Cloud support may store data in ~/.steam/steam/userdata/<user-id>/71250/ in addition to or instead of this directory. The app ID (71250) may differ in some cases. Treat backslashes as forward slashes. See the glossary page for details.


  1. Verified by User:AmethystViper on 2019-12-11
    Creating a new steam_appid.txt file for the game with its Steam App ID number when it didn't initially had this file allowed the game to legitimately launch without Steam.
  2. Steam Community :: Guide :: BetterSADX
  3. [QUESTION] Menu and HUD Size -Currently WIP- :: BetterSADX