- halo fodder
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- Exalted Mythic Member
Halo 3 ODST is an expansion to Halo 3. Like most expansions, they are made to provide players with a different perspective, follow a sort of back-story and simply enjoy more of the actual game, without a direct sequal. So ODST is simply an expansion, not meant to be a sequal, so that we get to see more of Halo 3.