Where there is software there is often piracy and the NES/Famicom was no exception. Although the NES and Famicom has been dead for many years now there are still pirate outfits that continue to produce games.
 

PIRATE FAMICOM DISK SYSTEM

Hacker (Disk Hacker) - FDS
Allows you to copy other FDS disks.

PIRATE FAMICOM DISK GAMES (DISK SCANS)

Almana no Kiseki - Konami
Bubble Bobble - Taito
Duck Tales - Capcom
Garfield, A Week of - Towa Chiki
Kalin no Tsurugi - Sword of Kalin - Xtalsoft

Ultraman - Bandai

Who Framed Roger Rabbit? - Kemco