Doom 3 is a science fiction horror 3D first-person-shooter game developed by id Software and Aspyr Media. Set on Mars in the year 2145, a scientific research facility has reasearched into the fields of teleportation. However, something goes wrong, and the teleportation experiments open a gateway to Hell, resulting in a catastrophic invasion by demons. You must fight to stop the demons from attacking Earth. The demo features the first 3 levels in the single player mode.
Mac OS X 10.6.8 or newer
Intel powered Mac (1.8GHz or faster)
128MB graphics card
Free download at gamefront.com