Heads up, soldier. Halo: Spartan Assault, the omnidirectional shooter spinoff set in the Halo universe, is now available on Windows 8 devices. That means Windows 8 PCs and tablets, including Surface. You can also nab the game on Windows 8 phones - so long as Verizon is your carrier, that is.

If you prefer your spinoffs with a little more context, Microsoft and Dark Horse have also produced a prequel comic series, Halo: Initiation. You can find a preview of the first issue on the Dark Horse website.