This can be played as either a single-player game or a multiplayer game. In either case, the blue car is controlled by the arrow keys and the red car by the W, A, S, and D keys. The goal of the game is to collect as many gems as possible before the timer runs out while avoiding the rocks and the sides of the road. The popping noise warns you that you have less than 10 seconds left.
i go the idea from a book, but the rest of it is all my own. The only problem with it is that my road doesn't scroll properly and I can't figure out what's wrong with it. If any of you know why, please tell me. If you used the single-player version, you are more than welcome to announce your score in the comments.