Robot Entertainment's upcoming title Orcs Must Die! will be made available on October 5 and October 12 for XBLA and Steam, respectively.

Orcs Must Die! Is an action-strategy title that has players defend fortresses under attack. A variety of traps and weapons are made available, to offer a number of ways to take out the invading orcs.

Users can replay fortresses in order to experiment with all possible tactical variations, as well as play through a story-driven campaign and unlock the hardcore "Nightmare" campaign.

Robot Entertainment was formed by the founders of the shuttered Ensemble Studios, which worked on Halo Wars and Age of Empires.