Halo 4

Halo 4 is a shooter game in which players predominantly experience gameplay from a first-person perspective; the game perspective switches to third-person when using certain weapons, abilities and vehicles. The player's head-up display (HUD) shows real-time information on the player character's armor system, such as shield status, information on current weapons and abilities, and waypoints for goals and objectives. The HUD also has a motion tracker that detects allies, enemies, and vehicles within a certain radius of the player. The game sees the return of the alien species who were formerly members of the Covenant as foes, and introduces a new type of enemy called the Prometheans, which are Forerunner artificial intelligence (AI) constructs. There are three types of Prometheans: Knights serve as leaders of the group and are considered the deadliest of the Promethean forces; Crawlers are a weaker class that often attack in packs; and Watchers offer support and have the ability to shield or revive Promethean allies.

Halo 4 features updated versions of many human and Covenant weaponry from previous Halo games, as well as introducing new weapons for the humans, Covenant and Prometheans. The game also features reusable equipment, called armor abilities, introduced in Halo: Reach. New armor abilities are autosentry; the hardlight shield, which activates a protective barrier similar to a riot shield; Promethean vision, which diminishes environment detail and shows hidden players as silhouettes; a regeneration field, which heals all players in close proximity and can emit a short range kinetic blast; and finally the thruster pack, which allows the player to launch themselves several feet in a horizontal direction. Returning abilities include active camouflage; jetpack; and hologram, which creates a doppelgänger of the player running towards a target point.

Halo 4 takes place in a futuristic science fiction setting in the year 2557, four years after the events of Halo 3. Backstory details that hundreds of thousands of years before the modern era, humans were one of several interstellar civilizations. Following a war with the parasitic Flood, the humans came into conflict with the Forerunners, a powerful race that upheld a policy of benevolent shepherding of other races known as the Mantle of Responsibility. After centuries of war the Forerunners defeated the humans and stripped them of their technology and empire.

The Forerunners soon fought the Flood themselves; after exhausting every other strategic option available to them, the Forerunners activated weapons of mass destruction known as the Halo Array. The Array's firing killed all sentient life in the galaxy to deprive the Flood of their food. Life that the Forerunners cataloged was then reseeded throughout the galaxy.

In October 2007, shortly after the release of Halo 3, Halo developer Bungie split off from parent company Microsoft. Microsoft retained the intellectual property and rights to Halo, and Bungie continued developing Halo games until 2010. During this period of time Microsoft formed an internal division, 343 Industries, to manage the franchise and develop future games.

In 2008, while 343 Industries was still in formation, Microsoft approached Starlight Runner Entertainment to help assemble the "Halo bible". Starlight Runner is a New York-based company that specializes in creating and producing transmedia franchises. Their job was to examine all content of the Halo universe, clean it up, and make it coherent and understandable for the people involved with the creation of Halo games and media. Frank O'Connor, a content manager at Bungie, assisted the team with the creation of the "Halo bible" before moving to 343 Industries to become Halo franchise development director.

Halo 4 received mostly positive reviews from critics, with aggregate review website Metacritic assigning it an average score of 87 out of 100, based on 87 reviews. Many reviewers were impressed by 343 Industries' debut effort and considered it a worthy addition to the series. Ryan McCaffrey of IGN gave Halo 4 a very positive review, considering it to be the best game of the series to date and the best Xbox 360 game of 2012; he called it "a bar-raising triumph for the entire first-person shooter genre." Wesley Yin-Poole of Eurogamer remarked that although he was initially skeptical of changes being made to the formula, 343's greatest achievement was managing to stay true to what Halo is. He was enthusiastic to see what the developer would do with Halo 5 and expected them to deviate further while retaining the series' "magic".

Halo 4's campaign received widespread acclaim reception from critics. Reviewers enjoyed Master Chief's return as the protagonist, and the emotional connection between Master Chief and Cortana was highly praised. Mike Mahardy of Game Informer complimented the characterization improvements of Chief and Cortana, calling their evolved love story more "focused" and "relatable" to the player, in comparison to the "cloudy and impersonal" stories from the prior games of the franchise. GameSpot editor, Chris Watters, described the "thrilling and emotional return of Master Chief and Cortana" as the highlight of the game.