After mixing up the hidden object genre with its first Facebook game, Living Classics, Amazon Game Studios takes on tower defense with its first mobile game, Air Patriots.

Create a squad of planes and guide them about the screen with your fingers, drawing attack paths in order to efficiently destroy enemy forces. It's a more active take on the defense genre, requiring much of the player than poking icons and hitting the fast-forward button.

Air Patriots is available today on Android, iOS and the Amazon Kindle store.