Doom 3: Resurrection of Evil is a first-person shooter video game developed by Nerve Software and published by Activision. It was released for Microsoft Windows on April 3, 2005, as an expansion pack and sequel to 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 includes the original Doom, Doom II: Hell on Earth, and Master Levels for Doom II. The video game features eight multiplayer game modes. Resurrection of Evil 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.