Mario Party N64dd add-on (lost add-on for n64 game; existence unconfirmed)

Mario party is a game released for the nintendo 64 in the year of 1998

Nintendo 64 add-on

The nintendo 64dd was peripheral only released in japan, which allows the console read magnetic discs, few games were released for this and many of these ended up cancelled, if you connect the peripheral to the console with the mario party cartridge and set a random disk is place to the nintendo 64dd a black screen will appear with the text that you have placed the wrong disk and that we put the correct disk

Reference

The cutting room page about Mario party