Yes, but only over Xbox LIVE or through system link. You can have up to two people per Xbox if you are playing campaign. The same goes for any Halo game except the first two (you can't play their campaigns over Xbox LIVE, but you can system link)
yes you can play 4 players on one xbox for halo
yeah you can but first you need to get a life
no
Be player 2 in the halo 3 co-op campaign. Or, play the Arbiter levels in halo 2.
Another Spartan
You can play 4 player co-op on Halo 3, but not all on the same Xbox. To play 4 player co-op on Halo 3 you can either have 4 people all on different xbox's and use xbox live, or have 2 people on each Xbox and either use Xbox live, or System link to join the parties together.
you don't
Yes, there is co-op in Halo Reach.
There should be a co-op in Halo reach because there was in Halo 3 and ODST why would they stop co-op there?
The second player will also play as Master Chief in a co-op game.
yes it can
yes u go to play multiplayer and then u go to co op then u press a then u play the lvl u want to
Yes, ODST is made for Co-op game play, Both on Xbox Live and Local game play.
yes
Yes, there is a multi-player (odst) campaign and a new HALO 3 disc with a muti-player campaign