SuperTux began development in 2003 as an open-source platform game inspired by the early Super Mario Bros. titles. The project was initiated by a small group of developers seeking to create a free and cross-platform alternative using the Simple DirectMedia Layer (SDL) library. Over time, the game evolved through contributions from a broad community of volunteer programmers, artists, and level designers, with development coordinated primarily through public version-control repositories and community forums. Early releases focused on establishing the core platforming mechanics and graphical style. The first Milestone release was version 0.1.0, released on May 3, 2004. Milestone 1 introduced a completely new set of original graphics, the basic gameplay framework, new enemies, and the first official
Windows and
Mac OS X ports. Subsequent releases also added new enemies, power-ups, and environmental themes. Another significant milestone came out on December 17, 2006 with version 0.3.0, also known as Milestone 1.9. Milestone 1.9 was a preview release of Milestone 2 and marked the beginning of a transition to a more modern engine architecture, improved physics, and expanded level scripting capabilities. The later 0.4.x and 0.5.x series continued refining the engine, updating artwork, and enhancing compatibility with contemporary operating systems. Version 0.6.0, released in 2019, provided substantial graphical and technical upgrades, including new animations, improved lighting effects, and major revisions to many levels. The update also integrated an enhanced in-game level editor, enabling players to create and share custom levels more easily. Subsequent minor releases have focused on stability improvements, updated assets, and quality-of-life features such as an add-on manager for installing user-created content. Version 0.7.0, released in 2026, introduced brand new sprites and abilities for Tux, revamped graphics, a complete level design and story rework of various levelsets, new NPCs, enemies, music, gameplay mechanics, a level editor revamp, local multiplayer, and other improvements to the code. Throughout its development, SuperTux has been distributed free of charge under the
GNU General Public License. Official releases are made available for Linux, Windows, macOS, and various BSD systems, and are regularly packaged by Linux distributions. The game continues to be actively maintained by its volunteer community, with ongoing work on additional worlds, engine enhancements, and expanded modding support. The game was developed under usage of
Simple DirectMedia Layer as a
cross-platform middlelayer targeting
OpenGL and
OpenAL. The
game engine and physics engine are self-developed. The game's
metadata are
S-Expressions of the programming language
Lisp, and
scripts are written in
Squirrel. In January 2022,
SuperTux was released on
Steam as an
Early Access game. == Reception ==