If you press the up arrow key, it goes up. If you press the down arrow key, it goes down. If you press the left arrow key, it goes left. If you press the right arrow key, it goes right. The goal is to touch the green line at the end. If you touch the red lines, you get sent back to the beginning. If you touch the purple lines, you get a point. If you touch the black lines, you get a point taken away AND you get sent back to the start. When you touch the green line, it means you have finished. If you want to restart, press r. If you want to reset your points, press the space key, but after you reset, you will find yourself at the start.