Downhill

So you are a rock going down the mountain. A and D to move left and right respectively. One problem: the faster you go, the more pieces start falling off you, so you got to balance your speed to make it far. There are 4 types of things that you will find down the mountain: A bush (the black rhombus), which will make you slow down; A ramp (the black triangle), which will throw you in the air at a cost of a bit of your speed; A bunch of speed lines (use your imagination), which speeds you up; Another rock with glue on it (the cross sign), which gives you a bit more size. It's not balanced at all, so good luck making it past 300 m, but hey it's a thing.