- last post: 01.01.0001 12:00 AM PDT
I think the only difference between Halo 3: ODST (Both Disks) and Halo 3 is that you can play the original campaign levels on Halo 3. So keep your Halo 3 disk if you want to still play the original levels, otherwise just sell it. (Don't blame me if I'm wrong)
You won't have to switch disks (ODST second disk to Halo 3) just to forge on specific maps. Halo 3 ODST will include all maps INCLUDING the 3 new ones, Heretic, Longshore, and Citadel.