EDGE Extended is one of the most polished games on any mobile platform. The graphics and sound effects are slick, but it's the game play mechanics that set this game apart. The controls, response and overall package are even better that the first EDGE.
It's one of those games that's obviously been designed specifically for iOS users, the current crop of iOS users that have grown accustomed to quality portable titles, from the ground up. It probably shouldn't be missed.