Doom3 BFG edition game engine

 RBDoom3BFG 3 is a Doom 3 BFG GPL source modification. The goal of RBDoom3BFG 3
 is to bring Doom 3 BFG with the help of SDL to all suitable platforms. Bugs
 present in the original DOOM 3 will be fixed (when identified) without altering
 the original game-play.
 .
 Note, to play the original game, you'll need a copy of the game data.
 .
 The package can also be used with free map data, like the demomap from
 OpenTechBFG.