Mario Paint 64

Falcon was an unreleased game by Spectrum Holobyte.

A mysterious game that was being developed for the 64DD by a team at HAL Laboratory headed by Yoichi Yamamoto, a former construction engineer. While little is known of the game in its original form, it is believed that many of the game's features were later incorporated into Pokémon Snap, developed by the "Jack & Beans" team.

Mario Artist: Game Maker was one of the games from the Mario Artist series that ended up cancelled due the Nintendo 64 Disk Drive lackluster sales.

Eat or be eaten! Assume the role of an animal in it's early stages of evolutionary development. As your animal instincts take over, you will boldly traverse hostile environments, savagely stalking your prey to assert your place in the animal chain of power. Will you have what it takes to become the new king of beasts? The game started development on the Nintendo 64, but went unreleased, being later ported to the Nintendo GameCube. A prototype of the Nintendo 64 version has been found

A virtual pet breeding and raising game for the 64DD that was being developed by Shigesato Itoi, Shigeru Miyamoto and Pokémon producer Tsunekazu Ishihara. In the game, you raised and cared for an unspecified creature. The game used the 64DD's internal clock so the creature and the world it was in would continue to grow and change, even when the game wasn't being played. It was also intended that the creature could be transferred to a Game Boy cartridge so players could continue to care for the creature on the move. Expansion kits for the game were also planned, although it was unclear how these would have been distributed. The game was discussed a number of times during 64DD development, and a playable version of the game was planned to be shown at Nintendo Spaceworld 2000, but it never appeared. In an interview, Shigeru Miyamoto stated that the game had been dropped due to the team being busy with other projects. It is believed that several of the game's ideas were later used in Animal Crossing and Nintendogs.

X was first showed as a tech demo for the Super Nintendo Entertainment System, before starting development on the Game Boy. This version has colored graphics. The game would later become the first Star Fox.

Mario Artist: Video Jockey Maker was one of the games from the Mario Artist series that ended up cancelled due the the Nintendo 64 Disk Drive lackluster sales.

A space-themed sim featuring party mode and co-op with a heavy dose of humor.