Vanguard Games and 343 Industries made an annoiuncement today it’s great for those people who’ve terrible patience. Halo: Spartan Assault, Microsoft’s new top-down arcade shooter Windows 8 mobile devices, might be launching today at 4pm Pacific.

The game centers around Halo 4’s Sarah Palmer and the origins of the Spartan Ops program. The tale itself slides inbetween the events of Halo 3 and Halo 4. Players who blow through all 25 missions could be in a position to gain experience points and unlockable Spartan emblems for his or her Halo 4 game.

Read our preview of the sport for more details. When you’ve got a Windows 8 device, you’ll go download the sport today for under $6.99.