Doom Absolution is a cancelled sequel to Doom 64, announced as a project for the Nintendo 64 game console by Midway Games in cooperation with id Software shortly after the release of the first game. It was intended to be multiplayer-oriented, possibly excluding any single player elements altogether.
RC Robot Adventure Game is a prototype pitched to Nintendo by Masahiro Sakurai alongside Dragon King: The Fighting Game. It starred an RC robot and the player needed to hack cameras to progress.
Dark Hyrule Fantasy is a mod for The Legend of Zelda: Ocarina of Time with the goal of telling a new story, in which a new threat emerges in Hyrule, plaguing the survival of all that lives. As this threat emerges, a light will shine bright in darkness.
Development on the mod was cancelled and the game started being reworked into a new original game called "Dark Haven Fantasy" using the Godot engine.
The Legend of Peach is a mod of The Legend of Zelda: Ocarina of Time that intends to translate the Super Mario 64 stages in the Ocarina of Time engine and Zelda mechanics.
The creator gave up on its development after releasing the first demo.
Dragon King: The Fighting Game was an unfinished low budget 3D fighting game, and was the first in a planned series of fighting video games. The game was developed for the Nintendo 64, where it was to make unique use of the joystick on the controller. After deciding to use Nintendo characters to give it a more proper atmosphere on the Nintendo 64, the game later became Super Smash Bros.
In 2022, Masahiro Sakurai presented in his own YouTube Channel some footage of the game, with the official title localization of "Dragon King: The Fighting Game".
Originally named Kirby Bowl 64, the Japanese name of Kirby's Dream Course, Kirby's Air Ride was one of the earliest games shown for the Nintendo 64. The earliest screenshots showed Kirby rolling down hillsides as a ball, but with the name change came a change in gameplay style: Kirby now raced around on Warp Stars.
The game was shown over a number of years before simply fading away without an official cancellation.
The game resurfaced in 2003 as Kirby Air Ride on the GameCube.
A game mentioned in a number of interviews, and developed by DMA Design. It featured a variety of human and alien characters racing to the top of high towers. The game was eventually dropped so DMA Design could focus on its Body Harvest and GTA projects.
A sequel to 1080° Snowboarding was confirmed to be in development by Left Field in 1999, but it was later confirmed that development had moved to the GameCube. Left Field left Nintendo shortly after in order to work on multi-format titles. Nintendo Software Technology took over development and released 1080° Avalanche in 2003.
Revealed at Nintendo Spaceworld 2000, Echo Delta was developed by Clever Trick under Marigul Management. The game was a real-time strategy title where you controlled a submarine recovering parts of a sunken ship. You also had to mine energy from the ocean floor and deliver it to the "core" to upgrade your submarine. You would have to defend the core, and yourself, from enemy boats.
After Spaceworld, the game was quietly cancelled.
Reportedly, when Nintendo saw Silicon Knights' survival horror title at a trade show, they quickly set the wheels in motion to bring the company in as a second party. Development of Eternal Darkness continued on the Nintendo 64 for a short time before being ported to the GameCube as Eternal Darkness: Sanity's Requiem.
The Nintendo 64 version seemed to contain at least one playable character who only appeared as a bit-part in the final game: a knight named DeMolay. There appear to have been many other chapters cut from the final game as well, suggesting that Silicon Knights intended the game to have further sequels. Unfortunately, these also failed to appear.