Fieldrunners (iPhone) is a tower defense game that combines cute cartooony runners, vehicles and flying objects with serious looking towers that lob plasma, bullets and shoot electricity. Long before the tower defense (TD) genre spawned hundreds of copycats as much as it has some original concepts going, Fieldrunners for the iPhone was the definitive game of the tower defense genre and iOS app development. Tower defense games have multiplied exponentially since then, from cute themed games to hardcore action.
Meanwhile, Fieldrunners for iPad ($7.99) came out in 2011 – meaning indie developer Subatomic Studios took their sweet time to port the iPhone version to a bigger screen. Fieldrunners 2 HD ($7.99) on the other hand, launched to great success late this year, and is retina-display ready.