A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
"Tux, of Math Command" is a math drill game starring Tux, the Linux Penguin. Lessons are included from simple number typing through addition, subtraction, multiplication, and division of positive and negative numbers. It is intended for kids ~4-10.
Domination is a game that is a bit like the well known board game of Risk or RisiKo. It has many game options and includes many maps. Written in java it includes a map editor, a simple map format, multiplayer network play, single player, hotseat, 5 user interfaces and many more features, it works in all OSs that run java 1.4 or higher, and Android.
OpenSource OpenGL Multiplayer Multiplatform Battle Zone capture the Flag. 3D first person tank game. Project has moved to Github: https://github.com/BZFlag-Dev/bzflag
Pioneers - The Settlers of Catan
Pioneers is an emulation of the board game The Settlers of Catan, which can be played over the internet.
ChessDB is a free open-source chess database for Windows, Linux, Mac OSX and most UNIX and UNIX-like operating systems. ChessDB is based on code from Scid http://scid.sourceforge.net/ - a project for which there have been no updates for several years. In
Software that will keep track of your favorite internet game servers such as Quake 3 &4, Enemy Territory, Call of Duty, Counter Strike & Warsow etc. Supports filtering and country locations...
This is ATARI XE/XL game ported to Linux. This game was very popular and was one of the greatest ATARI games. You can see similarities to sokoban, but this game has more features like shooting, unfriendly animals.... SDL, SDL_image, SDL_mixer and SDL_ttf
RealTimeBattle is a programming game, in which robots controlled by programs are fighting each other. The goal is to destroy the enemies, using the radar to examine the environment and the cannon to shoot.
Rocrail has been moved to: https://launchpad.net/rocrail
cNibbles is a curses based version of the old nibbles game (also known as snake). Your object is to control the worm and help it eat apples distributed on the playing area.