Half the battle in creating a puzzle title for the iPhone, it seems, lies in creating an original concept that stands out from the crowd. With Edge, developer Mobigame has not only created an entirely unique experience, but it's executed it brilliantly on multiple fronts.
Edge gives you control over a cube, which you must successfully navigate through a series of isometric environments. You're able to move in four different directions, and you can climb walls of up to one cube length, with certain physical restrictions. On the way to each level's goal, you'll need to solve small puzzles and overcome obstacles placed in your path.