Gaming Historica | Famicom Disk System: Rockman 4 | Unreleased Prototype (Patreon)

In 2014 this development cartridge for Rockman 4 on Famicom Disk system was sold on Yahoo Japan Auctions. It was never available for emulation and the person who buy have not show it to anyone. Nobody knows what is on there or if it has many differences from the Famicom released version! Maybe one day we can try 😄