I'm not quite sure I get exactly how many SMA4 E-Reader cards there are. Are there a large nuber of cards, packed randomly in each box, and I'd need to buy a few copies of each series in order to collect them all? Or, for example, does every Series 1 box include the same cards, meaning taht to get all of the cards, I'd only have to buy a Series 1 and a Series 2? I'm a bit confused... Super Mario Bros. 3 is my favorite game of all time, and I'm looking forward to expanding it with the E-Reader! ::> Thanks a lot!