Halo Wars is a strategy game based on the legendary Halo universe. In campaign mode, players will command the armies of the UNSC warship "Spirit of Fire," consisting of familiar and new UNSC units in its initial encounters against the Covenant, an alien coalition threatening to obliterate mankind.

With the guidance of Serina, a spirited A.I. persona, gamers will direct legions of UNSC soldiers, Warthogs, Scorpions and more, each group having its own strengths and uses in battle. Adventurous commanders can also call upon ancient Forerunner technology, if they are fortunate enough to find it hidden throughout the battlefield.

Covenant forces are also waiting for players to lead them into battle in multiplayer skirmishes via the New Xbox Experience. Call upon an arsenal of new and familiar Covenant units such as Grunts, Elites, Ghosts and even Scarabs to defeat foes on the battlefield. Strategic-minded players who react well under pressure will emerge victorious.

• New take on a legendary world: Experience the early battles between the UNSC and Covenant, in a time predating the original Halo. Join the crew aboard the Spirit of Fire, a Phoenix-class colony ship converted for UNSC military use, and guided by the A.I. persona Serina. Discover an ancient artifact during a journey to the planet Harvest, the first planet to be attacked by the Covenant. And then get ready for the wars.
• Strategic command of armies in large-scale combat: Gamers are in command of the battlefield, playing as either of two unique civilisations: UNSC or Covenant. Counter and crush your opponent by tactically fielding the superior army. Choose among leaders possessing elite skills that can turn the tide of battle. Use various combinations of leaders and units, and create countless strategies tailored to your preferred playing styles.
• Groundbreaking Xbox 360 strategy game: Since inception,