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 here
. It is also straightforward to create custom courses using a graphics editor.
This game contains examples of the following tropes: