If you never managed to get the hang of the wall jump on Super Metroid then Ninjump might be more to your liking. This free fast-paced arcade game has been out for iPhone for a bit and can now be downloaded from the Android Market now.
Sort of like a vertically-scrolling Canabalt with ninjas, the object of Ninjump is to get the highest score possible by scaling the walls of a never-ending building. You tap the screen to leap from wall to wall, swinging your sword as you do. The timing of your jumps is essential; as you pirouette through the air your katana slices any enemies in your path.
On the way you’ll be plagued by rival ninjas tossing shuriken at you, flaming squirrels and dive-bombing birds. Killing three of any of these consecutive critters sees you unleashing a mighty screw attack style move, which’ll make you temporarily invulnerable as well as looking suitably badass.
Your scores are added to a Papaya account, which you can set up within the app. Papaya is an OpenFeint style point-scoring system that allows you to make a little custom avatar too. We’re not sure why the Android version comes with Papaya when the iPhone one featured OpenFeint support but who cares – Ninjump for Android is a genius timewaster and its free.