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)

Director Neill Blomkamp explores the lives of Marines and ODSTs on a last, desperate mission in a post-invasion Earth – a mission that may secure the salvation, or usher the destruction of the entire galaxy. Edited together as a standalone piece for the first time, these three shorts are the first glimpse at what a live-action Halo could and should look like and a must-see for Halo fans of every stripe.

With its defensive forces all but obliterated, Earth has fallen to the unstoppable might of the Covenant. These alien occupiers have discovered something beneath the ancient African sands - something incredible...something Forerunner.

Red vs. Blue regulars, Sarge, Grif, Church and Co. solicit a surly, spherical friend from the darker reaches of the Halo Universe and get a guided tour of the new Halo 3 maps and some of their hidden surprises. As usual, the biggest surprises of all come from the Galaxy’s dumbest recruits. Join them on an illuminating and amusing journey through the first Halo 3 map pack: Heroic.

Follow the Master Chief in his fight against the Covenant as he uncovers Halo and battles to unravel the mystery behind it. On a journey from the Pillar of Autumn to the portals of High Charity, he will encounter not one enemy but many: A terrible army occupies Earth, a vicious parasite is loosed on the galaxy, an ancient alien doomsday weapon is primed and ready to fire... And mankind’s survival hinges on the remaining few.

Take a look behind the scenes of the making of the Halo 3 announce trailer. Never-before-seen in-game footage, and fun insights from the Bungie Studios team are highlights of this short documentary piece. An 80 piece orchestra, Bungie's new graphics technology and masterful storytelling brought the Halo 3 announce trailer to the big screen at E3, 2006. This is your chance to get a little insider glimpse at the people and process that brought it all together. (English, Not Rated)

Celebrate the free release of Halo 3’s Heroic Map pack with this trailer; it features a few of our favorite things created by the community using the Heroic maps.

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.

Watch the Halo 3 Ad, "Believe" Diorama. (Not Rated)

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