In Mass Effect 3, an ancient alien race known only as “Reapers”, has launched an all-out invasion of the galaxy, leaving nothing but a trail of destruction in their wake. Earth has been taken, the galaxy is on the verge of total annihilation, and you are the only one who can stop them. The price of failure is extinction. You, as Commander Shepard, must lead the counter assault to take it back. Only you can determine how events will play out, which planets you will save from annihilation and which alliances you will form or abandon as you rally the forces of the galaxy to eliminate the Reaper threat once and for all.

BioWare also unveiled today the Mass Effect 3 N7 Collector’s Edition, a special edition of the game featuring exclusive bonus content and unlockable items including in-game appearance packs, a Dark Horse Comic Book, a hardcover art book, an exclusive extended soundtrack, exclusive lithograph and an exclusive N7 patch. Designed to delight both new and seasoned fans, the Mass Effect 3 N7 Collector’s Edition also gives instant access to the N7 Arsenal Pack which features four tactical guns exclusive to this special edition. The Mass Effect 3 N7 Collector’s Edition is available for pre-order now at participating retailers for $79.99 in limited quantities.

Blending world-class shooter combat with interactive, cinematic storytelling and space exploration, the Mass Effect series is one of the most highly decorated in the history of games, having earned over 200 international awards.

4 player co-op multiplayer

Join your friends in the all-out galactic war to take Earth back. The universe of Mass Effect expands with the addition of new co-op multiplayer missions, playable over Xbox Live, PSN and PC internet. Players can choose from a variety of classes and races, form an elite Special Forces squad, and combine their weapons, powers and abilities to devastating effect as they fight together to liberate key territories from enemy control. Success in multi-player will have a direct impact on the outcome of the single player campaign, giving players an alternative method of achieving ultimate victory against the greatest threat mankind – and the entire galaxy – has ever faced.

Mass Effect 3: Galaxy at War

As a bonus to the campaign, BioWare is introducing the Mass Effect 3: Galaxy at War system, a new way for players to manage and experience the galactic war from multiple fronts, including a new 4-player co-op mode. The key to saving the galaxy is the “Galactic Readiness” level, measured by Commander Shepard’s ability to apply every possible asset – people, weapons, resources, armies, fleets – in the final battle against the Reapers. Players can impact their game’s Galactic Readiness level in multiple ways via the Mass Effect 3: Galaxy at War system, including multiplayer. Other platforms and interfaces will be announced in the coming months. It is important to note that the system is entirely optional and just another way players can have control over your game experience – it is still possible to achieve the optimal, complete ending of the game in Mass Effect 3 through single-player alone.

Mass Effect 3 and the Mass Effect 3 N7 Collector’s Edition arrive on the Xbox 360, PS3 and PC beginning March 6, 2012. BioWare also announced earlier today that Mass Effect 3 on the Xbox 360 will include support of Kinect, allowing players to immerse themselves into the Mass Effect universe even further through new voice recognition technology. The Mass Effect 3 N7 Collector’s Edition will be available in a digital format on the PC exclusively via Origin, EA’s new digital store destination