Orcs Must Die! Unchained is the third game in the series and its little different then the original two. Now, developer Robot Entertainment is taking the series competitive and free-to-play with Orcs Must Die! Unchained, it will be a 5v5 multiplayer game for the PC that fuses the Orcs Must Die! action, strategy, and style with elements of both MOBAs and customizable card games.
Orcs Must Die! Unchained is expected to release on PC later this year. If you’re attending PAX East, you will be able to me up with developer Robot and check out Orcs Must Die! Unchained’s playable stations on the floor. Source IGN