Halo 3 which do i need

So i traded in my halo 3 a long time ago and found ou my odst is damaged. Do i need both to play it again its been to lkng i can not remember. Help would be appreciated.

Sorry if this is posted teice doing it from my phone

If you have the map packs just use your halo 3 disk. If not then you’ll need your halo 3 ODST multiplayer disk. Without it you can still play social slayer and team slayer only.