tux

SuperTux is a open-source classic 2D jump'n run sidescroller game in a style similar to the original Super Mario games.

High-speed arctic racing game based on Tux Racer

Tux Racer lets you take on the role of Tux the Linux Penguin as he races down steep, snow-covered mountains. Enter cups and compete to win the title!

Pingus is a free Lemmingstm-like puzzle game covered under the GNU GPL. It features currently 77 playable levels and runs under a wide variety of operating systems (Linux, Windows, MacOSX, etc.)