The Elder Scrolls IV: Oblivion

The Elder Scrolls IV: Oblivion is a 2006 action role-playing game developed by Bethesda Game Studios, and co-published by Bethesda Softworks and 2K Games. Taking place within the fictional province of Cyrodiil, the game's main story focuses on the player character's efforts to thwart a fanatical cult known as the Mythic Dawn that plans to open portal gates to a demonic realm known as Oblivion.