If you or your friends had a computer in the early 90s, you'll remember Stunts, a racing game where you had to drive impossible circuits featuring great graphics (in those years) that was successful.
Ultimate Stunts is the remake of that game. Developed by a group of gamers who love this game, now they offer you the possibility of playing a classic in your new computer. Loopings, corkscrews, bridges to jump over,... have fun!
It is very similar to the original one, it also includes the track editor that allows you to buld your own circuits.
OpenGL graphics, 3D Sound and multiplayer capability are other features of Ultimate Stunts we should highlight. Finally it's GNU, so you can enjoy it for free.