Welcome to MMODX
MMODX adds persistent dedicated-server multiplayer to Sonic Adventure DX. Players meet in hubs, chat, customize names and colors, enter synchronized action-stage trials, place individually, earn rings, and share multiplayer Chao Gardens.
This is not limited to a four-player party. Servers and rooms have configurable population caps, and the official server currently advertises room support for up to 128 players.
Controller fallback: before a trial starts, ready with E or Y from anywhere. Hold Share / View / Back / Select and press Left or Right to choose Trial A, B, or C from anywhere.
Public server list
Contacting master server...
| Server | Address | Players | Loaded mods |
|---|---|---|---|
| Loading server list... | |||
Loaded mods are explicitly declared by each host using the server configuration's Mods= field. Match that list before joining.
Installation guide
- Install the SADX Mod Installer. It prepares supported Steam copies and installs the Mod Loader and manager.
- Click Install in Mod Manager. If your browser blocks the link, download the ZIP and add the archive from the manager.
- Enable MMODX. If you use Dreamcast Conversion or another character-model pack, place MMODX above it so the MMODX recolor files take priority.
- Launch SADX, select a character, and choose a server from the in-game list.
Recommended client mods
| Mod | Status | Notes |
|---|---|---|
| MMODX | REQUIRED | Online client, profiles, chat, recoloring, trials, server browser, and Chao networking. |
| Better Input / SDL2 | RECOMMENDED | Modern controller support. Maps View, Share, Back, or Select to SADX's D button for global trial selection. |
| Dreamcast Conversion | OPTIONAL | Supported by separate Dreamcast recolor handling. Keep MMODX above it in load order. |
Host a server
Windows
- Download and extract the Windows server package.
- Edit
server.ini. - Forward inbound TCP and UDP 27015.
- Allow outbound UDP 27016 for public listing.
mmodx_server.exe --config server.ini
Linux / VPS
- Extract the Linux package as an unprivileged user.
- Edit
server.ini. - Open the same gameplay and master ports.
- Run directly or install the included service.
./mmodx_server --config server.ini
Explicitly report loaded mods
Use semicolons between mod identifiers. This exact list appears in-game and in the website's Loaded mods column.
[Server]
Name=My MMODX Server
Mods=MMODX;DreamcastConversion
MaxClients=2048
MaxPlayersPerRoom=128
[Master]
Listed=true
Host=mmodx.fun
Port=27016
Set Listed=false for a private server. Public listings expire automatically when heartbeats stop.