SF Memory Cassette (Nintendo Power)

Nintendo Power (Japanese: ニンテンドウパワー, Hepburn: Nintendō Pawā) was a video game distribution service for Super Famicom or Game Boy operated by Nintendo that ran exclusively in Japan from September 1997 until February 2007. The service allowed users to download Super Famicom or Game Boy titles onto a special flash memory cartridge for a lower price than that of a pre-written ROM cartridge. At its launch, the service initially offered only Super Famicom titles. Game Boy titles began being offered on March 1, 2000. The service was ultimately discontinued on February 28, 2007.