This formally licensed Game boy heat changing mug is that the good mug for those people born within the ’90s. Take a visit down memory lane whenever you sip from this nice mug. This can be the last word swat item! You’ll, sure enough, receive several compliments from your fellow nerds and people appreciate the previous classic games. It’s a great novelty piece. The images do come up when coffee is added and the image is on both sides of the mug.