Super Mario Bros. 3 Para Bettle Challenge (E-Reader stage)

The E-Reader was a Game Boy Advance cartridge that you could slide E-Reader cards into in order to play games or unlock content in other games. Super Mario Advance 4 has a special world called "world-e" You could slide one of 3 different card types in the E-Reader and transfer the effects of the card to the game itself. There are Power-Up cards, Demo cards and most importantly, Level cards. This to some people was a tedious process as you needed 2 GBA's to complete the transfer of each card.

The E-Reader also had another problem, lack of sales. This made it incredibly difficult to find these in stores. Here's what really impacted the E-Reader and this game, When they stopped selling the E-Reader, They didn't even finish the Mario E-Reader card set in North America! There were supposed to be 4 different sets of the cards. We only got 2 of them. Not too big of a deal but we missed out on some good levels. That's what makes getting a E-Reader so difficult. I got mine from a friend...