Seems like a really 'lite' version of the map editor. Kinda like Garry's Mod except without a lot of the construction weapons.
Holy crap that looks awesome. Makes me want Halo 3 so bad. My list of games to buy: Bioshock Medal of Honor: Airborne Halo 3 Assassin's Creed Get my paycheck today hehe
I CANT WAIT! I like this idea, but they should have had a full map editor. Im pretty sure they would have added a map editor if they didn't run into any problems, but hey the game play is still great