[[http://tuxracer.sourceforge.net/ Tux Racer]] is a single-player first-person 3D open-source cross-platform computer game created by Sunspire Studios in 1999. You play Tux the Penguin, and race him down various icy slopes of a big mountain trying to establish a fast course time. Powerups take the form of tasty herring.
Thirteen courses come bundled with the game, and more courses can be found [[http://tuxracer.fubaby.com/courses.php here]]. It is also straightforward to create custom courses using a graphics editor.
This game contains examples of the following tropes:
* EverythingsBetterWithPenguins: Tux.
* ExpansionPack: Tuxracer Belly Rub offers a huge one.
* GettingCrapPastTheRadar: From Tuxracer Belly Rub, the courses Big Ass Jump and I've Got a Woody.
* MadeOfIron: A real penguin would be skua pabulum after a few of the collisions Tux survives unscathed.