Amazon Game Studios, the newly launched videogame development venture from Amazon, has unveiled its first game today, Air Patriots, which the firm said runs on both Android and iOS platforms. The new social and mobile game is free, and revolves around a "tower defense" and repelling enemy tanks. The new game runs on Kindle Fire, Kindle Fire HD, Android, iPhone, and iPad. Amazon launched its game efforts in August with a Facebook game called Living Classics. The company said it is looking to create "innovative, fun, and well-crafted" games.