A playable demo of Halo Wars has been released via Xbox Live Marketplace, giving you the chance to try out this real-time strategy game developed by Ensemble Studios and slated for a February 27th release, exclusively for the Xbox 360. Halo Wars will allow you to take charge of the human UNSC armies and see the Halo universe from a totally new perspective. The game will take place before Halo 1 during the UNSC's first deadly encounters with the Covenant. Players will lead the crew of the UNSC "Spirit of Fire" from initial skirmishes to an all out war against the evil Covenant. A new trailer is now available.