Knights Onrush is another castle defense game offered for the iPhone and iPod Touch. This one comes with a medieval theme, the app is looking to provide a defensive experience of another caliber. Easily compared to games like Stickwars or Defend Your Castle, the game offers a great touch experience with some excellent graphics. Everything you would expect from a castle defense game. There are plenty of upgrades that can be bought and a large number of crazy enemies that will lay constant siege to your castle.