The game Nimble Jump is pixely, cute, and entirely addicting. It's also difficult to play, but extremely enjoyable at the same time. Out for both iOS and Android - the latter released just recently, the former earlier this year, this game is prepared to take on both of the big mobile ecosystems at once. You'll begin with a character that's chosen for you, leaping from one wall to the other to avoid saws, then you'll be given the opportunity to create your own character on a pixel grid. From there, you'll never stop.