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Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time.
Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4.
Earn Steam achievements, complete missions and compete against your friends for the top scores in the leaderboards.
It's time to join the assault, Spartan!