On Tuesday, Microsoft, 343 Industries, and Vanguard Games announced Halo: Spartan Assault. Though there was speculation Spartan Assault might be an Xbox One title, it turns out Microsoft is just putting its most visible gaming franchise on its Windows 8 platforms.

Spartan Assault will only be available on Windows 8 PCs, tablets, and phones, and feature an original story set between the events of Halo 3 and Halo 4. The game's 25 missions will follow the exploits of Sarah Palmer, who you may remember from the most recent sequel, as she partakes in the rise of the Spartan Ops program.

The upcoming game will use a combination of touch controls and console-like controls (as well as mouse and keyboard support) to provide an "accessible, pick-up-and-play experience for fans and newcomers alike." There will be leaderboards, weekly challenges, new achievements, and future integration with Halo 4 is planned as well. There will also be microtransaction to aid you in your battles.

Halo: Spartan Assault is due out this July, and we should learn plenty more about the mobile and desktop game next week at E3.