Pro-Am 64 is the name of a cancelled game by Rare, intended to be part of the Pro-Am series. It was presented to Nintendo after which it was later reworked into Diddy Kong Racing.
Super Smash Kart is a rom hack for Mario Kart 64 developed by Goofydudeguya. The game is based around the Super Smash Bros. series and features characters and locations based around various Nintendo franchises such as Zelda and F-Zero.
The Spy Who Loved Me 64 is a full campaign mod for GoldenEye that aims to recreate the original film from 1977.
Currently available as a demo that features the first 3 levels of the game, and a glimpse of the multiplayer in level 4. Level 1 will take the player to the opening scene of the movie in the Alps. Level 2 will take place in a search for answers in Egypt, and Level 3 will pit the player up against a major assassin.
The project was made with a console first mentality, and has been thoroughly tested to run on N64 hardware. An Expansion Pak is required, however.
Contra Spirits 64 is a canceled entry in the Contra series that was being in development in 1998 by Konami Computer Entertainment Osaka and was planned to be released on the Nintendo 64.
The game was presumably going to be a side-scrolling platformer shoot 'em up in 2.5D, with the camera probably changing to a higher perspective in certain sections and boss battles.
Most likely due to poor sales of the Nintendo 64 in Japan, Konami ultimately decided to stop the project and disbanded the team, which then were assigned to work separately in different projects.
The Indigo mod for Ocarina of Time is an ambitious romhack that creates a new adventure focused on an alternate Hyrule in which you play as adult Link from the start.
A mod for Mario Kart 64 which swaps all the racers besides Mario for Link, Zero Suit Samus, Crash Bandicoot, Sonic the Hedgehog, Banjo, Waluigi, and Skull Kid.
Super Mario Fallen Stars is a demo made by Skillux which was never completed. The game features four colorful levels and 45 stars.
All three Cap Switches are sitting out in the open in the overworld. The Toad in the overworld refers to Bowser's Ice Mountain as "Bowser's Lair" but Bowser does not make an appearance in this game.
Ookouchi Gengorou Ikka is a cancelled simulation game for the Nintendo 64. The game was not ever officially announced and it's existence is only known through a prototype build that was shown off by Game Tanteidan, a retro game store based in Nihonbashi, Osaka, on their blog.