Orcs Must Die! all games in one place

The founder of Age of Empires series of PC games Ensemble Studios that was disbanded by Microsoft didn't disappear from the scene, instead, they formed a new game studio Robot Entertainment, which soon afterwards announced their brand-new and original series of games Orcs Must Die!. The series currently has published three works in all: Orcs Must Die! (OMD for short) - pure single-player game, Orcs Must Die! 2 (OMD2 for short) - single-player game with double-player co-op game, and Orcs Must Die! Unchained (OMDU for short) - pure multi-player online free game.