Real-time strategy
From Halopedia, the Halo wiki
Real time stategy is a term used to describe games in which you command armies whilst in combat. Many featured elements include a resource system, which is extremely common in RTS games. RTS games often involve vechicles, and a system where you can build stuctures. Another common feature are heros, individuals who count as one unit who have unique abilities. Halo Wars is set to be a Real Time strategy game.