Yoo NinjaRunner Games, Android ****

A one-touch arcade style game, Yoo Ninja is fast-paced and addictive.The premise is simple: guide your ninja through the obstacle course without slowing him down too much or falling off the screen. The gravity- defying ninja will run across the underside of ledges before a single tap returns him to the ground. It’s all done in a colourful cartoon style . Controls are simple – you just tap the screen to make him jump to running on the ceiling, or back to the ground. The trick is to avoid the obstacles so you don’t slow down the ninja too much, because there are darts on your tail, ready to take your ninja down if you fall too far behind. Hitting blocks will slow you down, and certain ledges will speed you up, which can make navigating the course more difficult. Moving requires a bit of thought; you can blindly run into a dead end if you aren’t careful. Passing through the laser beams earns you a checkpoint from where you can restart. There are 34 different levels to get through in story mode, but if you fancy something a bit less driven, there’s an endless mode that allows you to select the game speed.