アイアムアティーチャー スーパーマリオのセーター © 1986 Royal Kougyou
(I am a Teacher - Super Mario no Sweater)
This game was designed to be a sewing simulator. Players were able to design sweaters, adding pictures of famous characters such as Mario, Luigi, Peach and Bowser in the process. The design would be sent to Royal, who would then make a real sweater of that design for 2,900 Yen.
Disk ID: ROY-ISM
Released on August 27, 1986 only in Japan.
This game is considered to be one of the rarest FDS releases.
Game's ROM.