The year is 2552 and the galaxy is being colonized. The Human-Covenant war rages on and you must choose a side. Fight alongside Master Chief as you lead your UNSC troops to control the map and preserve life throughout the galaxy. If you select the mighty strength of the Covenant, your mission is clear...eradicate all humans and fight back the infectious Flood. As the Flood you will infest the map, destroying all that stands in your way. The choice is yours but the goal is the same...win at all costs! Formulate a strategy. Evolve your combat. Conquer the map.