In this puzzle, which would ideally be masked by a painting of some sort, the player can tap different parts of the screen to light up all of the tiles surrounding the one they tapped. Some of the tiles are "hidden tiles" and will light up green when illuminated. When a hidden tile is illuminated, part of the black light wil turn on, starting to reveal the secret message. The goal is to have all of the tiles illuminated at once to reveal the full message.