A demo has been released for tower defense game Orcs Must Die 2, so hit the source to begin downloading via Steam.
Among the content featured: two early levels supported by both single player and co-op modes, the Sorceress and War Mage classes, and finally, new traps and upgrades.
Interested parties should know the price of the original game has been dropped to $10 permanently, and a 75% discount is on now, so you can grab it for the price of a bus ticket. Remember that one unlocks you 10 levels in Orcs 2, so consider it if you don't own it already.
Orcs 2 launches Monday.