Play Mario Kart: Double Dash!! online with Double Dash Deluxe on Dolphin

Double Dash Deluxe is an open-source homebrew mod by stebler. It is currently in open beta. The official wiki says to back up your SD card and expect bugs.

Double Dash Deluxe only works with Mario Kart: Double Dash!!. It does not work with any other game.

Official setup guide: Double Dash Deluxe wiki.

Use your own legally obtained copy. We recommend that you use your own legally obtained copy of the game (dumped from your own disc) and patch it. ROM does not condone illegally downloading ROMs.

The current release listed on the wiki is 1.0-beta.40 (2026-11-12). Download it from the official GitHub release. The live website is beta.ddd.gg. For help and project news, use the Double Dash Deluxe Discord.

Get the mod

1. Download the official zip from the wiki download link.
2. The official package is a Homebrew Application. The zip contains an apps/ddd folder with boot.dol, meta.xml, a changelog, and licenses.

The official wiki page does not currently include step-by-step launch instructions for each platform. Use the wiki and the Discord for the current way to start the mod on your setup.

This setup: Dolphin Emulator

The official wiki lists Dolphin Emulator as a supported system. It does not split the instructions by Windows, macOS, Linux, or Android, and it does not list Dolphin menu settings. You still need a copy of Mario Kart: Double Dash!!, which is the only game this mod works with.

Official compatibility

The wiki lists these supported systems, which can play online with each other through Double Dash Deluxe, using Mario Kart: Double Dash!! only:

• System: GameCube, Wii, Wii U (in vWii mode), Dolphin Emulator
• Game: disc, SD Gecko, Wii SD, USB storage
• Controller: GameCube Controller (natively or with the USB adapter)
• Network (optional): BBA, ENC28J60, USB Ethernet, Wii Wi-Fi
• Game save (optional): memory card, SD Gecko, Wii SD, USB storage
• Custom content (optional): SD Gecko, Wii SD, USB storage

Online play is client-server with lag compensation. The wiki lists worldwide and personal rooms, FFA and duels (2v2v2v2 and 4v4 are planned), spectator mode, race replays, a live website, and an in-game updater.

Limitations

• This is an open beta: back up your SD card and expect bugs.
• For custom tracks, drivable coordinates must be between -131072 and 131072 for tracks to be playable online.

Sources: Double Dash Deluxe wiki, official download, beta.ddd.gg.