The Python/Tk Empire Interface (PTkEI) enables you to connect to empire 4.x.x (Wolfpack) servers. Empire is a real-time war game with long tradition. You can find out about Empire and currently running servers and other clients at its homepage. This client is an example for a truly portable cross-platform GUI, known to run on Unix, X11, Win32 and Mac. Additionally you do not give up any command line power as a player, but you have to to learn the empire commands to make use of this GUI client.
TuxMathScrabble challenges young people to construct compound equations and consider multiple abstract possibilities. There are four skill levels for practice, from basic addition and subtraction through multiplication and division. This software includes a data recorder interface for student performance assessment.
Thousand Parsec is a turn-based space empire building game, as well as a framework for creating a similar group of games, which are often called 4X games (eXplore, eXpand, eXploit, and eXterminate). Some examples of games from which Thousand Parsec draws ideas are Reach for the Stars, Stars!, VGA Planets, Master of Orion, and Galactic Civilizations. Unlike commercial alternatives, it is designed for long games supporting universes as large as your computer can handle. It allows a high degree of player customization, and features a flexible technology system where new technologies may be introduced mid-game.
ski is a game in which you ski down an infinite slope, facing such hazards as trees, ice, bare ground, and the man-eating Yeti. Since you have put your jet-powered skis on backwards, you can't see ahead where you are going; only behind where you have been. However, you can turn to either side, jump or hop through the air, teleport through hyperspace, launch nuclear ICBMs, and cast spells to call the Fire Demon. And since the hazards occur in patches, you can skillfully outmaneuver them. A fun and very silly game that proves you don't need fancy graphical user interfaces to have a good time.