Halo: Spartan Strike is now available on Windows 8, Steam, iOS devices and Windows 8 phones.
The mobile top-down shooter will run you $5.99.
Halo: Spartan Strike tells a new story in the Halo universe set during the events of Halo 2 on New Mombasa in 2552.
Those playing on Windows 8 devices can compete for a top spot on the leaderboard and earn Achievements that unlock an exclusive emblem, nameplate and avatar in Halo: The Master Chief Collection on Xbox One.
There’s also the Halo: Spartan bundle available for iPad, iPhone, and Steam which includes the game as well as Halo: Spartan Assault for $9.99.