200 MB
Open-source Sonic kart racing — Race, Battle, and online via Connect.
SRB2Kart is a free racing game released under Open Source (GPL-2.0). It runs on Windows, macOS, Linux, needs about 200 MB of disk space, and requires no account, payment or trial. On a computer, the fastest route is the PlayBound Launcher. On a phone or tablet, use the official store or site instead.
One-click install
PlayBound fetches the official release — no third-party mirrors.
Windows
Click Install in PlayBound to download and run the official SRB2Kart v1.6 Windows installer from GitHub.
macOS
Install uses the official SRB2Kart 1.6 macOS dmg from the same GitHub release.
Windows
Launch srb2kart.exe, configure pads in Options, then Host Network Game or Join Game from PlayBound.
Online: create a PlayBound Connect party, host from Multiplayer, and let joiners use Join Game (+connect) or the in-game Join Network Game menu.
How to join and navigate multiplayer lobbies and servers in SRB2Kart.
Host: Multiplayer → Host Network Game (Race or Battle). Joiners: Join Game in PlayBound (passes +connect) or Multiplayer → Join Network Game.
Local splitscreen also works on one machine — plug in extra pads.
Minimum
1.0 GHz CPU · 1 GB RAM · OpenGL 1.4 GPU · 300 MB storage
Recommended
Dual-Core 2.0 GHz CPU · 2 GB RAM · Dedicated OpenGL GPU · 500 MB storage · gamepad
Yes. It is free and open-source under GPL-2.0. The official builds are on GitHub (STJr/Kart-Public).
Same family as SRB2: host a network game on UDP 5029. PlayBound Connect puts the party on one virtual LAN and Join Game can pass +connect host:port.
Yes. v1.6 uses the SDL Game Controller API for a wide range of pads. PlayBound does not rewrite a config file.
No. It is a free fan game from the Sonic Team Junior / Kart community, like SRB2.