Well, from the image below, it seems like nothing. Eminent Crafts has released a set of officially licensed Yu-Gi-Oh! keycaps, which are now available for pre-order and will ship in December.

If you want to make a keyboard truly unique, then you need keycaps. Yu-Gi-Oh has a lot of new options available for pre-order now, whether you're new to the world of keycaps or looking to add to a ...