When I first heard of the duel disk coming to stores I had to have it, so I bought it the first day it was released. Since I am a national Yu-gi-oh card game champion, the main reason I wanted it was to use it to duel.The first thing I noticed was that I could not use cards in card protectors, because they wouldn't fit in the card slots. This was a problem because, like all serious players, I wanted to protect my valuable cards. so, I tried not using card protectors, and that was a big mistake! Every card placed in the card zone slots were from damaged to seriously damaged!! But I was impressed by the technology of the duel disk. So, in conclusion, if you are a serious duelist this product would be useless to you, I don't recommend buying it. I guess this toy would be fun if you were an average six year old kid that doesn't pay attention to the true possible value of a card, or the condition of their cards.