Sonic Fly is a funny phisycs game. Long long ago,there is a group of very lovely Sonicss live in the beautiful grassland,they have a fancy for rings, they always dream of having all kinds of rings and more than they could have.So the Sonics wish for god every day,finally,the god was deeply moved ,he come to Sonics and give a promise of their wish.But all rings stay in the sky,they must figure it out themselves.