- Unseen Blade
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- Intrepid Heroic Member
It'll show Halo 3, because that's what the system will read it as. On your games list, it'll show up as "Halo 3", not "Halo 3: Mythic". ODST's thing will only show up on Halo 3: ODST. Halo 3: Mythic is technically not Halo 3: ODST, just packaged with it.