A fun, colorful puzzle called Swap Pins asks you to clean up each level by putting the colored plugs back into place. They should match the color of the tile with the round hole. By clicking on the selected plug, you pull it out of the hole, and then click on the place where you want to put it, but this place should already be free. Consistency is important because there can only be one free hole and if you make a mistake, you will not be able to make the next move, ending up in a deadlock. So mentally go through the entire process in Swap Pins and then take action.
