Famicom Disk System

The Famicom Disk System (Japanese: ファミリーコンピュータ ディスクシステム) was a peripheral for the Famicom (known as the Nintendo Entertainment System in North America) that was released in 1986 in Japan only. The Disk System connected to the Famicom via a port on the bottom of the Famicom and used rewritable double-sided floppy disks ("Disk Cards") to store game data. These Disk Cards were some of the first console games to allow a player to save their game progress. It was planned for a North American and European release but was ultimately cancelled.

Many popular Famicom games such as The Legend of Zelda, Metroid, and Kid Icarus were originally released as Disk System titles. Most Disk System titles were later re-released as regular cartridges, using passwords or battery-backed memory to save game progress in lieu of the Disk Cards' rewritable memory.

Zelda games

 * (launch title; was later re-released on cartridge)
 * Zelda II: The Adventure of Link (was later re-released on cartridge)