Halo: Revelation

Halo: Revelation is a First-Person shooter, Role-playing Game set in the Halo universe. It takes place across the entirety of the Covenant War, 2525 all the way to 2553, and concludes the John-117, Blue Team, and Flood overarching story arch, using the life of SPARTAN-010 as a central storyline. In the game the protagonist, 010, never speaks, save for a few lines, allowing the player to immerse his/herself in the game, and like Halo Reach, allows the player's customization in multiplayer to appear in campaign, including gender, and even the player's choice of name for the protagonist.

Features
Like its predecessors, Halo Revelation is a first person shooter played from the viewpoint of the protagonist. The player doesn't utilize equipment, but can perform special melee attacks against medium sized enemies (Brutes, Elites, enemy Human and SPARTAN characters), use smaller enemies as shields, which can also be thrown (Grunts, Jackals, Drones), and can latch onto and "board" larger enemies (Hunters), in which the attack animation is the same for boarding and disabling a Wraith.

The protagonist is an enigmatic SPARTAN-II with the call tag 010, or Zero-One-Zero. The player can change his/her name and gender at the beginning of the game. Players can hold items in an inventory which varies in size depending on which armor attachments you have, and you can find armor pieces during the storyline (from dead Marines, and/or SPARTANS encountered), or you can buy them in the Armory. The Armory is also where you can view your current items that you have. Certain attachments and armor limit the amount of items the player can carry. Finally, the player can 'assign' usable items to one of four directions on the D-pad, bringing the total up to 4 assignable items that can be used on the battlefield.

The SPARTAN's shields do recharge, but are not unlimited. Once the player has exhausted the generator he or she must find another. The player be without shields until one is found and thus extremely vulnerable to ballistic weaponry. Health does not recharge until the is located, which uses automatic biofoam dispensers to slowly regenerate health. Some items that are used to replenish health are, and.

Storyline
"Become humanity's deadliest warrior. Lead humanity's finest. Defeat an enemy infinitely your greater. Bring back the Chief. END THE WAR."

- Back Cover

In Halo: Revelation the story diverges on two campaigns. SPARTAN-010's campaign before the Battle of Earth, and the Battle of Earth during Operation: REVELATION. Each campaign has enemies that are unique to it, as well as its own garrison of weapons. The player's mission computers are also different depending on time period, the Pre-Battle of Earth Campaign utilizing a "Misriah Armories SPARTAN-II Mission Computer" and the Battle of Earth utilizing a satellite to determine the next deployment of David-010 and Blue Team, as their new leader.

Misriah Armories SPARTAN-II Mission Computer
From the mission computer the player can select previous missions and unlocked future missions while in-game. The developers wanted to to feel like the player was "jumping in and out of memories like recordings", a possible reference to David's photographic memory, or a helmet cam recording. There is still a loading sequence as if loading a mission from the start menu, but it allows one to play constantly without having to worry about going back to the start menu. Of course, you can't jump to multiplayer, forge, or split-screen with this feature.

GEOSCAPE Global Uplink
Since David assumes command of Blue Team shortly after attaining the rank of Lieutenant Commander, and since he no longer answers to anyone but Lord himself, it is up to David the strategic destiny of Blue Team. The satellite uplink is utilized by David to choose a future or past mission, once again, from in-game, but once again, is limited to that specific campaign. David can also utilize its functions to customize acquired armor attachments, purchase more, and review mission objectives of the selected mission. Unlike the previous campaign, David can give armor attachments to his teammates too.

Campaign Missions
Campaign Missions are divided into four types, ', ', ', and ', with Battles and Raids being the most common. Battles with the prefix  are seen too, but they only appear twice in the entire game, and aren't selectable on the filter settings.

Pre-Battle of Earth Campaign

 * 1) (2517-2524)  (A tutorial basically) 
 * 2) (September 15th, 2525)
 * 3) (September 16th, 2525)
 * 4) (November 27th, 2525)
 * 5) (May 3rd, 2527)
 * 6) (July 17th, 2527)
 * 7) (March 1st, 2530)
 * 8) (September 13th, 2530)
 * 9) (February 12th, 2535)
 * 10) (September 9th, 2549)
 * 11) (November 11th, 2549)
 * 12) (January 8th, 2552)
 * 13) (February 2nd, 2552)
 * 14) (July 18th, 2552)
 * 15) (July 24th, 2552)
 * 16) (August 11th, 2552)
 * 17) (October 31st, 2552)

Operation: REVELATION

 * 1) Second Battle of New Mombasa
 * 2) Battle of Tel Aviv
 * 3) Battle of The Congo
 * 4) Siege of Johannesburg
 * 5) Raid of URF Neon Angel
 * 6) Skirmish over New York City
 * 7) Siege of New York City
 * 8) Siege of Eden
 * 9) Raid of UNSC Henrietta Marie

Characters

 * Main Characters
 * UNSC
 * LCDR SPARTAN-010
 * LTJG Frederic-104
 * MCPO John-117
 * SCPO Kelly-087
 * CPO Linda-058
 * FADM Lord Terrence Hood
 * The Assembly
 * Covenant Separatists
 * Arbiter Thel 'Vadam
 * Ship Master Rtas 'Vadum
 * Covenant Empire
 * High Prophet of Truth
 * High Prophet of Regret
 * Flood
 * Gravemind
 * RONIN
 * Cody-033
 * Caz-098
 * Kato-055
 * '''Regal One-Three
 * Capt. J. Freeman
 * Lt. K. Miller


 * Minor Characters
 * UNSC
 * Catherine Elizabeth Halsey
 * Col James Ackerson
 * CMDR Carter-259
 * LCDR Kat-320
 * LT Thom-293
 * LT Jon Patrick-312
 * CWO Jorge-052
 * WO Jun-266
 * WO Emile-239
 * CAPT Veronica Dare
 * GySgt Eddie Buck
 * LCpl J. Davis