space sim game, inspired by Elite

 Oolite is a space sim game, inspired by Elite, powered by Objective-C
 and OpenGL, and designed as a small game that is easy for users to pick
 up, modify and expand upon. Almost every aspect of the game can be changed
 by using simple, free graphics packages and text-editors.
 .
 The purpose of the game is to fly from planet to planet, buying and
 selling goods, shooting pirates or committing acts of piracy.