This is old news but Rock, Paper Shotgun has released an article discussing the imminent open source release of id Tech 4. For those of you who are in the dark, id Tech 4 is the game engine that powered Doom 3, the first game to have specular highlighting and bump mapping, elevating PC gaming to a whole new level.
Imagine: freeware PC first-person shooters with Doom 3 graphics. The engine may be ancient now but this release will surely open the creative floodgates of indie developers.
The link after the jump.
>>>Read the article about the PC game engine release here