Orcs Must Die! 2 hits this summer with co-op play

Orcs Must Die! 2 gets a sequel this summer that includes cooperative play.

Last year's popular Robot Entertainment tower defense game, Orcs Must Die! gets a sequel on PC this summer, the developers say. And this time you'll be able to play alongside a friend.

The sequel will include cooperative play, new enemies, a redesigned spellbook, more defenses, a new upgrade system and, of course, a brand new campaign that picks up where last year's game ended.

"In 2011, we implored players to kill the orcs," said Robot Entertainment CEO Patrick Hudson. "As many as possible. Yet, only 3.4 billion orcs have been slaughtered to date. The only way we will get to a respectable orc death toll is by adding another killing machine and cooperative play. Bring a friend and destroy the orcs!"

The campaign lets you pick up the story as either a War Mage or a Sorceress as you fight your way through "an army of vile new creatures."

As a bonus, players who own the original Orcs Must Die! on PC will get "exclusive content" in the sequel.

If you're interested, you can also check the game out at PAX East later this week where it will be shown of by the developers at booth 1172.