A graphical history of id Tech: Three decades of cutting-edge graphics and game engine technologies

Over 30 years ago, way back in 1992, developers id Software launched Wolfenstein 3D on PCs. Unbeknownst at the time, it also kick-started an evolutionary tree for a series of game engines that are not just synonymous with id Software's subsequent Doom and Quake franchises, but are also famous for pushing the boundaries of graphics rendering.

Yes, we're talking about id Tech, and with Doom: The Dark Ages, we've now reached version eight. Of course, game engines are more than just about graphics...