Dark Ninja Go

It is an 8-bit platform endless runner game for android devices with a point counter and a high score. The ninja tries to avoid objects like stones and trees by touching the one button to let ninja go top and down. During the time of the game runs, the speed(difficulty) will change when achieving the higher points. He also can throw limitless ninja stars by touching another button to defeat certain enemies which he otherwise cannot avoid. The background changes between day and night after a certain amount of time. There only should be two buttons to use one is for switching direction and the other is to throw the ninja stars. The game should be as simplistic as possible!! We are inspired by the T-Rex Game on Google Chrome which should be used as orientation. For more details see attachment