

Nintendo Power was a service offered from 1997 for Super Famicom and from 1999 for GameBoy Color. The service consisted of selling rewritable cartridge that consumer could load game on it. Games could be buy from store which has NP Station. The service was discontinued in 2007
It was possible to load multiple on on a single cardridge. On power up a display menu is show to select the game you want to play with. SFC card has 4 Mbytes space on it and GBC card has only 1 Mbyte. Since the GB Flash size was so small most of time only one game could be loaded since most popular game like Zelda DX and Mario DX are both 1 Mbytes games.
Japanese version of Zelda DX and A Link To The Past where offered on the service as you can see on picture if you hit Read More ;). Btw both game are the same as retail version.
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