i think that ODST was okay... But i see it more like a timekiller than something Bungie would take seriusly. Halo 3 came out september 26 2007 - Halo 3 ODST came out almost 2 years later and Halo Reach a year after that. Would have been alot of time waiting, and then Bungie made something smaller than the other games, and firefight to entertain us with in that time period.