Use the arrow keys to collect the blue gems. Purple gems subtract 5 points from your score. Emerald gives you 10 points but spawns rarer, and Rubys will give you three. When your score reaches 100, you get a win. If your score goes below 0, you lose. To switch leading methods from arrow keys to mouse, press space. to switch back to arrow keys, press a. If you want to reset wins and losses, press s.
