an excellent spinoff that retains the classic, loveable halo gameplay and level design (some of the best levels in the series), with a nice, different take on the world of halo. the rookie levels have a really nice atmosphere and really help set the mood, but could've afforded to be a bit shorter, and the game could've afforded to be a bit longer with an extra full mission or two thrown in there (but it's understandable as to why it's short since it wasn't MEANT to be a $60 game)