Mobile Game App

I want to build a gaming app, like sort of Supermario going a line, to achieve wealth. flying arrows , vultures and land obstacles will approach him in the same direction he faces. he has to run automatically and jump by double-tap the screen. to run faster there will always be a skateboard to catch and once caught it. He can skate 2times more than run. the arrow an vulture will be less in the first level and later there will be a continuous increment to 5 levels for difficulty.