OpenXcom is a new engine for the old game UFO: Enemy Unknown (X-Com: UFO Defense in the USA), a popular strategy videogame made by Mythos/Microprose in which you take control of the X-Com organization to fight off the alien menace invading Earth.
2DBuildingGame is a building game written in Python and pygame.
A simple console MP3 player.
An IDE for HTML, Bash, Perl, PHP, C, etc.