A little ninja runs up between two endless walls on its own. Tap to leap across before a spiky ledge or a squirrel running down gets you, and knock out birds and squirrels mid-leap — on the wall you are the target, in the air nothing can touch you. Three knock-outs in a row earn a shield, gems line the best leaps, and the climb keeps getting faster from the rooftops to the night sky. Free, no sign-up — play right in your browser.