Top-down blaster Halo: Spartan Assault is currently cheap on Windows Phone and Windows 8, as part of Microsoft's weekly Red Stripe Deals promotion.

The game's got 30 missions where you fight against the Covenant as Halo 4's Spartan commander, Sarah Palmer. There are weekly challenges and leaderboards, and you can play it with an Xbox 360 controller.

Harry gave it a Gold Award and said, "bright and a little bit brilliant. If you own a device that can run Halo: Spartan Assault, you should definitely give it a try," but warns that it "isn't enough to make you buy a Windows-powered device."

Spartan Assault will cost you £1.49 / $1.99 on the Windows Store if you buy it within the next seven days. After that, it will jump back up to £3.49 / $4.99.

Want more? Check out our growing collection of Halo: Spartan Assault news stories!