Doom 3: Resurrection of Evil is a horror 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 Ultimate 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.