Halo: Combat Evolved (2001)
"Halo: Combat Evolved" opens as the Pillar of Autumn exits slipspace near a mysterious ring-shaped space station, called "Halo" by the enemy of the game, the Covenant. A Covenant fleet attacks and heavily damages the Pillar of Autumn. Captain Keyes initiates "The Cole Protocol," a procedure designed to prevent the Covenant from learning the location of Earth. While Keyes prepares to land the ship on Halo, the Master Chief and Cortana escape via an escape pod, which crash lands on the ring. Cortana and the Chief are the only ones who survive the impact of the escape pod crash.
Keyes survives the Pillar of Autumn's crash landing, but is captured by the Covenant. In the second and third levels of the game, the Master Chief and Cortana gather human survivors and rescue Captain Keyes, who is imprisoned aboard the Covenant ship Truth and Reconciliation. Once rescued, Keyes orders the Master Chief to beat the Covenant to Halo's control center and to discover its purpose. The Master Chief and Cortana travel to a map room called the Silent Cartographer, which leads them to the control room. There, Cortana enters the systems and, discovering something urgent, suddenly sends the Master Chief to find Captain Keyes while she stays behind. While searching for his commander, the Master Chief learns that the Covenant have accidentally released the Flood, a parasitic alien race capable of spreading itself by overwhelming and infesting other sentient life-forms. Keyes falls victim to them while looking for a cache of weapons. The release of the Flood prompts Halo's AI monitor, 343 Guilty Spark, to recruit the Master Chief in retrieving the Index, a device that will activate Halo and prevent the Flood from spreading beyond the facility. ...
Did You Know? 343i originally attempted to re-use Halo Reach's Mark V(B)'s Mark V configuration model to depict Master Chief rather than create a new model of the original Mark V MJOLNIR armor. This plan was eventually dropped, as it was unanimously decided that the model "just didn't look like Master Chief," and a new model of the Mark V armor was created.