SuperTuxKart (STK) is a free and open-source kart racing game, distributed under the terms of the GNU General Public License, version 3.

SuperTuxKart is cross-platform, running on Linux, macOS, Windows, iOS (beta), Android systems and Nintendo Switch (homebrew).

SuperTuxKart's game-play is similar to that of the Mario Kart series, but also has differentiating elements, such as collecting and using cans of Nitro and the use of presents and bananas on tracks.

For example, Mozilla Thunderbird plays the referee, flagging the start of the race and saving players when they drive off the course.

The characters available in the base game are: Unlike Mario Kart, STK has a story associated with gameplay, similar to Crash Team Racing.

At the beginning of story mode, Gnu, the leader of the free/libre and open-source world, is captured by Nolok, the villain in STK, with his spaceship.

After the player defeats Nolok in Fort Magma, the final track of STK, Tux helps Gnu escape from his prison.

In 2006 Joerg "Hiker" Henrichs[10] resurrected the project and, with the help of Eduardo "Coz" Hernandez Munoz,[10] released the game in a playable state.

[17] This enabled much better graphics with features such as dynamic lighting, ambient occlusion, depth of field, real-time shadow mapping, and more.

[20] In May 2019, Joerg "Hiker" Henrichs stepped down as a lead developer of SuperTuxkart, with "Benau" and "Alayan" taking over as the new project leaders.