Air Patriots, a fresh take on the tower defense blueprints, is the first mobile game from Amazon Game Studios. Available for Amazon’s Kindle tablets, Android and iOS devices, the game essentially requires users to strategically draw squad plane attack patterns in order to hold back enemy tanks. It actually looks pretty interesting, and involves an upgrade system for those who enjoy deeper RPG elements. The best experience, as expected, can be found on Amazon’s own hardware, where features like GameCircle is supported so users can better keep track of achievements. Air Patriots is available now for free.