The Covenant control Earth. The Flood is unleashed. With the fate of the galaxy hanging in the balance, Master Chief is the only one that can save the human race. The entire epic story arc has led up to this moment. Master Chief, the last of his kind, is a warrior born for combat, bred for war… and humanity’s only hope.

After stowing away on a Forerunner spacecraft, Master Chief, a genetically altered, cybernetically enhanced Spartan supersoldier, must race back to Earth to stop the Covenant once and for all and save mankind. With his artificial intelligence companion Cortana in the grip of the Flood’s intelligent embodiment, Gravemind, Master Chief and his allies are vastly outnumbered. But the stakes are too high to do anything but face them head on.

In “Halo 3,” the third installment of this legendary epic, the war has come to a climax - the Flood continue to grow in numbers and strength, the armies of Earth are scattered and decimated, and the Covenant threaten to activate the Halo, effectively destroying all life in the galaxy. Master Chief’s mission: to stop the Covenant, destroy the impending Flood threat and ultimately save mankind

Like every other aspect of Halo 3, the co-op mode is chosen from a Lobby. Simply select Campaign, choose your network (Xbox Live or System Link) and invite your friends to join you, or they can simply join your session once it’s set up and in a lobby (but they cannot join a game once it’s in-progress). They will pop into your lobby instantly, and when you have all the players you need (anywhere from one to four) you can begin the game from the beginning – or from any of your saved checkpoints.

Split-screen co-op is as ever, limited to two players per screen – but they can if they wish join two other friends online or via System Link.

For fictional reasons, Bungie decided to avoid Halo’s slightly surreal compromise of two identical Master Chiefs and rather, use this opportunity to expand the Halo universe just a little bit. Player one will control the Master Chief, player two will control the Arbiter and players three and four will get the chance to control two brand new Elite characters.

PLAYER 3 (Sangheili)

Name: N’tho ‘Sraom
Affiliation: Fleet of Retribution/Special Warfare Group/Special Operations
History: N’tho ‘Sraom is the youngest member of his Special Operations unit and is one of a growing number of human sympathizers amongst the Sangheili youth. He is a fairly typical young male adult Sangheili—he began compulsory military service at the end of adolescence, and remains unmarried with no close, non-familial relationships outside of his martial order. N’tho Sraom refused to stand idly by while the Prophets replaced Sangheili units with Jiralhanae packs, and now bears deep resentment toward those Sangheili politicians who landed his kind in their current predicament.

Although N’tho ‘Sraom’s romanticized nationalism is emblematic of all Sangheili, he has developed a healthy respect for humanity—not for their physical abilities or martial prowess, but for their audacity and resolve.

PLAYER 4 (Sangheili)

Name: Usze ‘Taham
Affiliation: Fleet of Retribution/Special Warfare Group/Fleet Security
History: Although Usze ‘Taham was born into a respected merchant family he was fathered by Toha ‘Sumai—one of the preeminent swordfighters of this age. Usze graduated with honors from the top War College in the Iruiru region of Yermo, Sanghelios (a distinction he shares with Rtas 'Vadum). Shortly after receiving his first post within the Covenant Navy he was offered a place on the Prophets’ Honor Guard but he declined citing “lack of practical experience”. In truth, he had no desire to be part of a largely ceremonial unit, and at the end of his third combat tour, Usze ‘Taham again refused the post—even though his superiors warned him such behavior could be misinterpreted as apostasy.

Since that time Usze has evaded countless punitive actions, at least two assassination attempts, and served with distinction for two additional tours before the Schism. Following the dissolution of the Covenant, he was approached by the Ascetics to become one of their liaisons within the Navy.

Every player will have identical abilities – only their appearance and weapon starts are different (Elites will start with Carbines versus Battle Rifles for example, depending on the mission). So there you have it. Mystery solved. Internet dramas ended. Four player online co-op it is.

Features :

• “Halo 3” raises the bar on the next-generation gameplay experience with non-stop action, an incredible story, massive battles, and visually stunning worlds.
• Epic and compelling storytelling on a scale never before seen in interactive entertainment with new weapons, characters and challenges. You can experience Master Chief’s greatest battle as he transcends greatness and becomes a legend.
• Working in concert with Xbox LIVE on Xbox 360, “Halo 3” builds upon the unique social multiplayer experience of “Halo 2” and promises to enhance the innovative and evolving online gameplay of “Halo 2” on Xbox LIVE.
• Presented in stunning HD, see the well-known “Halo” universe as it’s never been seen before. State of the art HDR (High Dynamic Range) lighting makes every scene look and feel like the real thing, from terrifying gloom to dazzling sunshine, adding more detail to every weapon, more texture to every character, and more realism to every battle.
• Countless foes, each with their own distinct personality, strategy and fighting style, make for better encounters and more replay value, which will culminate in larger scale combat than ever before witnessed on the “Halo” battlefield.
• Staying true to the original games, “Halo 3” will support four player split-screen and system link gameplay, letting gamers battle it out both online via Xbox LIVE or with a group of friends right in their own living rooms.
• Made famous as a key component of the renowned “Halo 2” multiplayer experience, Bungie.net will continue to innovate how gamers track their progress, as they view their rankings and stats in real-time.
• Duck as a rocket sizzles over head. Take action as the footsteps of a Covenant adversary echo in the distance. Every sound in “Halo 3” is fully positional Dolby Digital 5.1 surround sound, bringing the world of “Halo” to an even more vivid level of realism.

Legendary Edition:

• Remastered cinematic material from “Halo: Combat Evolved” and “Halo 2” with developer commentary
• “A day in the life at Bungie” featurette
• High definition “Making of ‘Halo 3’” documentary
• Featurettes on game design, development, and more
• Early game concepts and their evolution over the course of “Halo 3’s” development
• Audio-video calibration tool custom designed by the “Halo 3” graphics and audio team
• Exclusive content from the creative minds of Machinima artists Red vs. Blue and This Spartan Life
• Illuminating “Halo 3” storyboard art book from artist Lee Wilson

Limited Edition:

• High definition “Making of ‘Halo 3’” documentary
• Featurettes on game design, development, and more
• Early game concepts and their evolution over the course of “Halo 3’s” development
• Audio-video calibration tool custom designed by the “Halo 3” graphics and audio team
• Elaborate and compelling “Halo” fiction and art book