http://www.youtube.com/watch?v=YQuUTg6VxXk&feature=player_embedded Grasshopper Manufacture has announced the official release date of the Xbox Live Arcade exclusive, Sine Mora. The game is being developed by Grasshopper Manufacture and Digital Reality, and will be released March 21. Grasshopper describes Sine Mora as a ”dieselpunk shoot ‘em up that provides a unique take on the genre, where time is the ultimate factor.”