The iPhone has seen a bunch of different RPGs come and go through the appstore. Some have hit the top spot in the most downloaded and some have been overall flops. But one thing is true, the genre is not a dead one. The latest RPG to head through AppVee's watch is Underworlds. This hack-n-slash RPG provides all the potions, level-ups and questing. It has been compared as a smaller version of Diablo.