Click on a card to reveal the backside of it. If you get a Voltorb your game is over. If you get a number it will multiply itself by your current score. How high of a score can you get? The numbers on the side and bottom will tell you how many Voltorbs and numbers on in a row. You can press the spacebar to add a marker to the board to help you remember which cards are where. Press Z and X to change the marker that you're using. When you get all of the 2s and 3s out of a level you move on to the next level. However the second level will appear super glitchy.
Based on Voltorb flip from Pokemon Heart Gold and Soul Silver. All graphics and programming were made by me. See if you can beat my high score of 1,259,712 in the first round ;)