Phoronix: Doom 3 BFG Approved For GPL/Open-Source

id Software released "Doom 3 BFG Edition" this week, a revised version of the Doom 3 game that came eight years after the original release of Doom 3. The engine source-code for Doom 3 BFG, which is still a modified id Tech 4 engine, is already approved for open-sourcing...

http://www.phoronix.com/vr.php?view=MTIxMDc