Kids can play the card game just like Yugi from the hit TV show, Yu-Gi-Oh!™ with the new Chaos* Duel Disk™ accessory. It fits on a kid’s left wrist and when it clicks into place, you pull the tab and it telescopes into Duel Mode – complete with an electronic number display that accurately and clearly keeps score. Works with the Yu-Gi-Oh!™ Trading Card Game, sold separately.