Game Pick: Kingdom Rush
Georgia Dow's app cap on iOS Today 327 is the game Kingdom Rush, which is a tower defense game. The goal is to build up your towers and try to defend your gates against the onslaught of creatures that approach. You also get a hero character that you can level-up, and you can buy additional characters as well.
There are 8 specialized tower upgrades to customize your strategy including Mighty Barbarians, Arcane Wizards, and Forest Rangers. There are over 18 tower abilities, 45 different enemies, and intense boss fights. The game features high definition cartoon art, and you'll command your soldiers and see them engage in hand to hand cartoon battles.