According to Microsoft, each of the three maps will present a different play style. Standoff (pictured) features a symmetrical valley with entrenched bases and fields of bounders, oriented for mid-sized objective and Slayer game types, while Rat's Nest features labyrinthine passages that create a Campaign-oriented experience ideal for indoor vehicles. The third map, Foundry, allows players to edit all of the objects in an industrial warehouse, placing stairways, walls, bridges and tunnels to build their own play space and customize their own map. Additionally, all three maps are player-customizable through the game's Forge feature, and Halo 3's matchmaking playlists are also set to undergo ongoing updates to optimize the social gameplay.