Japan's government has finally eliminated the use of floppy disks in all its systems, two decades since their heyday, reaching a long-awaited milestone in a campaign to modernize the bureaucracy. By the middle of last month, the Digital Agency had scrapped all 1,034 regulations governing their use, except for one…
Nintendo was planning on adopting floppies iirc, but they were too easy to copy from.
There was definitely a SNES floppy drive you could buy for piracy purposes. A few kids at school had them.
Not sure if it worked with larger games or Starfox which supposedly had an extra SuperFX chip to do 3D work.
Nintendo did use them for the add-on Famicom Disk System but that was all the way back in the 80s.