id Software and Escalation Studios have compacted the essence of Doom 3 into an iPhone app with Doom Resurrection, an on-rails first-person shooter that teleports the player from Mars to Hell and back.
Doom: Resurrection is perhaps the best-looking 3D game on the iPhone, and is a big step up from id's last effort, a port of Wolfenstein. But those good looks come at a price.
Quake developers id Software are very fond of Apple's iPhone as a gaming platform. The first-person shooter focused id has already released Wolfenstein 3D Classic and is planning double the Doom, including a scaled down semi-remake of Doom III.