In EGM's April issue there are details on a new game called LEGO Halo, but it's an April Fools Day joke. We can't help but think that LEGO Halo, if real, would be awesome.
Too bad. The fake screenshot is funny, though.
Would you play a LEGO-style Halo game?
Xbox360Fanboy.com: Lego Halo in the works at Bungie! [Update]