
Doom 3 features an award-winning game engine, id Tech 4, which has since been licensed out to other developers, and later released under the GNU General Public License in November 2011. The player, an anonymous space marine, must fight through the base and find a way to stop the demons attacking Earth.

However, the teleportation experiments inadvertently open a gateway to Hell, resulting in a catastrophic invasion by demons. Doom 3 is set in 2145 on Mars, where a military-industrial conglomerate has set up a scientific research facility to research into fields such as teleportation, biological research and advanced weapons design. The game is a reboot of the Doom franchise, disregarding storylines of the previous Doom video games. British developers Splash Damage also assisted in design for the multiplayer elements of the game. Developer Vicarious Vicious ported the game to the Xbox console (now backwards compatible to the Xbox 360), releasing it on April 3, 2005. Doom 3 was first released for Microsoft Windows on August 3, 2004. The game was later adapted for Linux, as well as being ported by Aspyr Media for Mac OS X.

Doom 3 (stylized as D00M 3) is a science fiction survival horror first-person shooter video game developed by id Software and published by Activision.
