There are a series of "map packs" that you download. To compete online in matchmaking you have to select a playlist that includes your map pack. If you do not have the latest map pack for that playlist you cannot play in it
go on machmaking
When you have downloaded them. They will automatically work.
go to custom games lobby then to select map then go to the right map :)
yes and no. You can play all the maps in the halo 3, but you have to download the rest.
it depends if you have halo Reach, 3 or ODST. but if you have Reach you should just have to select it from your hard drive storage and play it. To get the gamemode it usually comes with the map.
You can't. The Mythic Maps our only playable on Halo 3, not Halo Wars.
play sonic in halo just download and the maps change
If by "halo 3 maps" you mean the Halo 3 Heroic, Legendary, Mythic and Cold Storage maps, then yes. However to play campaign levels, you must actually advance in the game to get to them.
well that is happening so try download it again
go to custom games and look at the maps, it should show a star next to any new map u downloaded
you have to rehash and resign with your profile id and device ids
that happend to me but when i switched the xbox off once or twice then they were all there --------------------------------------------------------------------------------------------------------------