The Heroic map pack contains three new maps, each presenting a totally different play style. Standoff’s symmetrical valley, with its entrenched bases and fields of boulders is ideal for mid-sized objective and Slayer game types, while Rat’s Nest’s vast, labyrinthine passages bring something quite new to the Halo multiplayer experience – an indoor vehicle paradise, strongly influenced by the Campaign mode ideal for big team battles. Finally, Foundry is the ultimate Forge map – players can edit every single object in this voluminous industrial warehouse, place stairways, walls, bridges and tunnels to create an entirely new play space and build almost any kind of map they can think of. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

The Legendary Map Pack blends old and new. Ghost Town’s asymmetrical mix of confined spaces and long lines of fire makes for frenetic games. Avalanche re-imagines the original Halo classic, Sidewinder, with new features, tweaked vehicles and massive outdoor spaces. Significant changes bring big improvements to the map, yet its contours and cliffs should provide a welcome sense of familiarity. Blackout, on the other hand, is the purest remake to date – all time favorite Lockout gets a graphical overhaul, but retains its challenging mix of ramps, platforms, tunnels and hallways. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

As Halo 3 gets closer and closer for Xbox 360, you can mark your loyalty to the series by enhancing your 360 dashboard with this custom-built Halo 3 theme. The ruins of an embattled Earth, the vast African desert and a mysterious and ancient Forerunner object... There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Four incredible battle scenes from the Halo 3 Uprising comic book mini-series. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Warmly crafted, dutifully beautified update of Halo: CE classic multiplayer map, Chill Out. Love, Bungie

The long-awaited Mythic Map Pack drops into Xbox LIVE Marketplace. Investigate Orbital’s abandoned hallways - before it was evacuated, the Quito Space Tether was heralded as the “Civil Engineering Monument of the Millennium.” Witness Assembly, where Scarab hulls loom overhead, being decontaminated in preparation for the city-sized Lekgolo colonies that will breathe life into the massive metal husks. An excavation site surrounded by deadly Forerunner defenses, the mysteries of Sandbox are hidden high above, deep below, and right before your eyes. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Debuted at the 2007 E3 Expo in Santa Monica, this exhilarating montage of moments from Halo 3 is the first public unveiling of Halo 3’s single player “Campaign” gameplay, showing off the brand new graphics engine and giving a revealing glimpse of the events that make up the epic conclusion to the Halo Trilogy. The video, produced by Bungie Studios, also features the first musical performance from Halo 3, by composer Marty O’Donnell, and dozens of never before seen views of the incredible environments, characters, vehicles and weapons that define the thrilling elements of the Halo universe. (Not Rated)

Watch the Halo 3 "Believe" ad. (Not Rated)

Watch the short film, "Making of John 117 Monument", a behind-the-scenes look at the making of the Halo 3 ad. (Not Rated)

Take a closer look at two of Halo 3’s coolest features. The Forge map and object editor lets you recreate Halo 3 multiplayer maps to suit your style, or cooperate with up to eight other players to build a new game experience. Saved Films let you replay your games, Campaign or Multiplayer, from any angle, with near complete control over the 3D camera and DVD-like functionality. Both features are explained clearly in this in-depth feature, with input and commentary from Bungie and the game designers.