its called somethin else in japan
but over here its called a flash deck
its only 25 cards instead of 50
has alternate arts of certain cards
and other cards u can not get anywhere else
http://cardfight.wikia.com/wiki/KAD01:_Star_Drive_Deck
http://cardfight.wikia.com/wiki/KAD02:_Crested_Deck
and...