In Horse Racin', you have to pit your horse against a computer horse. You start out at the beginning of the track. To move your horse, push Z and X buttons on your keyboard. You only have to move your horse forward. To do this, push Z and X in rapid succession as fast as you can to build up your horse's speed. When you come to a jump, push the space bar to make your horse jump. Reach the end of the race before the computer player, and you win! Keep an eye your horse's speed in the bottom left corner of the game.