Air polution

Well my game idea is about air pollution and the first thing your going to do is pick if you want to be a boy or a girl or boy. Then you go to the settings you can click on start,multi player, control, and how to play. Then you go to chose level 1 and your difficulties easy, medium, or hard then you have to shot all the cars and for every car you shot down you get 10 points. There is going to be bikes to and if you shot them it takes 20 points of to. Every game you win you have can save 20% of air.