The game will be available exclusively on PC from July 30.
The sequel to last year's tower defence and action hybrid, Orcs Must Die! 2 adds the option to play the entire campaign co-operatively with a friend.
It also offers new spells and traps as defenses and a redesigned upgrade system.
Users who own Orcs Must Die! on PC already will be able to unlock exclusive bonus content in the new game.
Watch the trailer for Orcs Must Die! 2 below: