Besides the maps that come with the games, no.
halo 3 ODST will probably come with a second disc with all the Halo 3 Online maps on it (all 21) plus 3 more. will be halo 3 format.
forge probably not but it will come with 3 new maps for halo 3 and you play fire fight and the campaign in a bigger version of nomindbasa from halo 2
haw to make mode maps in halo 3
By getting halo 3 odst ( two discs ) first disc halo 3 odst campaign and 2nd disc halo 3 mythic comes with all the halo 3 maps.
You can't. The Mythic Maps our only playable on Halo 3, not Halo Wars.
When on Halo 3 in Pre Game lobby you press start and chose Xbox Marketplace. From there you can download the maps and other Halo 3 content.
Early 2009
yes and no. You can play all the maps in the halo 3, but you have to download the rest.
play sonic in halo just download and the maps change
i do belive there will be a forge to make maps like Halo 3 did.
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.