Doom 3: Resurrection of Evil is a first-person shooter video game developed by Nerve Software and id Software. It was released for the PC on April 3, 2005 as an expansion pack for Doom 3 and on October 5, 2005 for the Xbox video game console. The Xbox version does not require the original Doom 3 in order to play, and also includes the original Doom, Doom II, and Master Levels for Doom II.
The video game features eight-multiplayer game modes. Resurrection of Evil also features twelve new single player levels, six new enemies including the hunter, four new multiplayer maps as well as new weapons such as the double-barreled shotgun originating from Doom II.
Source: Wikipedia, Doom 3: Resurrection of Evil , available under the CC-BY-SA License.