Wormhole is perhaps one of the most simple iPhone games that delivers the real taste of a challenge. You are in charge of the complex underground wormhole system and your objective is to help the little glow worms find their corresponding gem. Navigate a worm to the wrong colour gem and you’ll lose a life. Sound simple? Well, the number of worms increase as you advance into the game so you must concentrate if you want to keep them alive! Fun yet addictive!