7. Anomaly Warzone Earth
Platforms: PC, Mac OS X, Linux, iOS, Android, Xbox 360, PlayStation Network
Anomaly: Warzone Earth is an oddity in the Tower Defense genre. It’s set in Baghdad, Iraq, following the crash landing of an alien ship – and, surprisingly, you don’t play as the aliens. Instead, your player character is tasked with getting to the alien spacecraft, accompanied by a small squad of combat vehicles. The differences don’t stop there, though: in lieu of having an active combat role, your job is to support your squad with various powerups and items. It’s surprisingly deep, especially so when you consider the fact that, before Anomaly: Warzone Earth had come out, nobody had successfully executed this role reversal – something which developer 11 Bit Studios pulled off with aplomb.