the ASCII-art variant of the CTruck3D car simulator series by Simon Hasur : a physically very realistic offroad driving simulator (rally ) in which one can drive in total freedom on a piece of terrain, make jumps, turn upside down and whatever ; see CTruck3D _Open and XCTruck3D _Truck
for more detailes. this is a variant which displays graphics using only ASCII characters. This is quite instructive as software, expecially if taken in conjuction with the pure X Window System version: in both cases the 3D frames representing what happens are done internally by the program, using basic concepts form 3D computational graphics. Stanrd C as all the optehr memeberso of the series.
it come in 2 subversions: Linux and Windows. for the Windows version there is a ready executable too. VIDEO: http://www.youtube.com/watch?v=n_O-9EFW5zk