About
Dr. Robotnik's Ring Racers is a free, fan-made kart racing game and spiritual successor to SRB2Kart, developed by Kart Krew Dev on the same modified Doom Legacy engine that powers Sonic Robo Blast 2. The game launched at v2.0 on April 24, 2024 (there was no v1.0 release) to widespread enthusiasm, featuring a massive roster of Sonic-franchise characters, a deep progression system, and 200+ circuits.
Linux support via a native Flatpak arrived shortly after launch in v2.1 (April 26, 2024), making it a first-class citizen on Steam Deck. The game has since been updated through v2.4 (November 2025). Online multiplayer is fully supported with a built-in server browser, and an active modding scene continues to add new content.
Identity
Launch
- Binary
- ringracers
- Needs files
- none beyond the binary
Runtime
- Runs as
- Native Linux
- Proton
- not needed
⚙ Setup notes
Platform: Native Linux — no Proton needed.
Install: The official recommended install on Steam Deck is the Flatpak (org.kartkrew.RingRacers) available on Flathub and installable via Discover in Desktop Mode. After install, add it as a non-Steam game in Gaming Mode.
Controller: Full controller/gamepad support is built in.
Addons: Addon files (custom tracks, characters) live at ~/.var/app/org.kartkrew.RingRacers/.ringracers/addons/ — enable hidden files in Dolphin to access.
DRM: No owned data files required.
The one thing to know
Free fan game: No purchase needed.
Install: Install via Discover (Flatpak org.kartkrew.RingRacers) for the smoothest Deck experience.
Linux: Native Linux support arrived in v2.1; make sure the Flatpak is up to date.
Addons: Addon/mod data lives in ~/.var/app/org.kartkrew.RingRacers/.ringracers/addons/.
Legal: No SEGA affiliation.
Community guides
Write-ups and threads from people who got this (or a similar) game running. deckport links to them — it doesn't reproduce them.
Get the artwork
deckport never hosts game images. Open this game on SteamGridDB, pick
the cover / hero / logo / icon you like, and drop them into the
game folder under .deckport-art/ before you push it to the
Deck. The importer files them under the right names automatically.
Run it on your Deck
Two files: the one-time importer (deckport.py) in your
Deck's home folder, and this game's install helper. Copy the game
into ~/Games and run the helper with Steam closed — it
writes the recipe (binary, launch options)
and registers the shortcut with artwork.