yugioh gaming cards.its a game played with cards.i have many of them and if someone can use them they are welcome to them.heres is some what they look like and from the cyberdark impact series.if kids or grandkid are into it they will know what ya are talking about.they are big thing for kids around here and even have touruments for this to.my son use to do it now hes getting out of it cause he getting older.i watched some play and i like to try and play it but im too old ya have to be a certin age.