64DD - Wikipedia

Mother 3/Earthbound 64 (lost build of unfinished Nintendo 64/64DD video game; 1999) - The Lost Media Wiki

Cancelled 64DD games: Paper Mario, The Legend of Zelda: Ocarina of Time, The Legend of Zelda: Majora's Mask, Dragon Warrior VII, Pokémon Snap

Randnet Disk, 64DD Wikia

Nintendo 64DD - Bulbapedia, the community-driven Pokémon encyclopedia

64DD - Wikipedia

Nintendo 64DD - Super Mario Wiki, the Mario encyclopedia

Last weekend I spent an hour with a N64DD. Never seen one before. : r/gaming

Kirby 64: The Crystal Shards - Wikipedia

Play game extensions

Cabbage 64DD Game

Mario Artist (lost builds of unreleased Nintendo 64DD games; 1999-2000) - The Lost Media Wiki

Tonic Trouble - Wikipedia

GameCube - Wikipedia

Super Mario Disk Version aka Super Mario 64DD (found unreleased Nintendo 64DD port of 3D platformer; 1999) - The Lost Media Wiki