Doom II is a mobile port of the classic 1994 first-person shooter. In this sequel to 1993's Doom, the nameless hero returns to Earth only to discover that the planet has been invaded by the first game's demonic enemies. Intense combat with a variety of weapons across non-linear game levels ensues. In addition to the main game, this version also includes the Master Levels, 20 additional levels released for the game in 1995.