Theseus is on sale for free – normally $2.99
Theseus is a fiendishly addictive and all-around superb puzzle game. Taken from the app store description: "Theseus is a refreshing twist on the traditional maze.". And frankly, Theseus is personally one of the most enjoyable app store puzzlers I've seen in a while, if not my new all time favorite.
The game is at heart a logic puzzle, and involves lots of strategy and thought. Its 85 levels will keep a persistent gamer busy for a long time, so don't expect to get much done for the few hours after downloading this app. It's sleek user interface and easy-on-the-eyes game play is icing on the cake.