We just learned this stuff in Bio. This game works as a supplement to classes. I tried playing it before, and it made no sense. Now it does. 5/5 for being the best online study game ever!
Best racing game ever. Period. You need to make more pseudo-singleplayer games so us people who apparently can't get on the multiplayer kongregate servers can have fun with other people.
I put in increasing difficulty, the boulder gets faster and faster as it goes on. There is actually only one boulder, it just cycles. You can get taken down by the side of the boulder.