Halo Spartan Assault is a top down shooter that takes place between Halo 3 and 4. Taking control of either solder Sarah Palmer or Spartan Davis, you fight back against a rogue sect of the Covenant that ignored the cease fire from Halo 3. Fighting through 25 single player missions, Spartan Assault contains all the action and weapons that Halo is famous for from an all new perspective. The controls are easy to get used to, and all your favorite weapons, vesicles, and enemies are here as well. Seeing as how this was originally a mobile game, it unfortunately contains micro-transactions. Thankfully, it isn’t pay-to-win. A recent update adds new missions, new achievements, and the ability to use XP to buy certain weapons rather than currency. Spartan Assault may not be a killer app for the Windows Phone, but Halo fans will love it, and it will tide them over until Master Chief’s newest adventure hits in 2015. BTW, if you have an Xbox One and a Gold membership, you have until the end of today to download this for free.