Orbit Duel Orbit Duel (abbreviated in "Orbit 2l" because the number 2 in Italian is pronounced "due"), is a game that simulates the orbitation of two satellites around a planet. The two players can modify trajectories trying to don't fall on the planet surface, or getting lost in space.
pyknic A collection of usefull code for games. I would not call it an engine.
Color Tower Defense is a game where you must use unique towers to defend off the waves of invading enemies. Upgrade your towers into one of the many choices for increased firepower. The more difficult levels require quick placement and selling of towers in order for them to keep the enemies in range and to be most effective.
ReTux A commercial platformer using the graphics of SuperTux.
Python OS 6 Python OS 6 is a complete user interface and application management system written entirely in Python using Pygame.