* GenreKiller: Unusual in that it didn't kill off the [[GottaCatchEmAll collectathon]] [[PlatformGame platformer]] by being a bad game - more that OneHundredPercentCompletion took so long that most people who managed it had had enough of that style of gameplay to last for years.
* HeyItsThatVoice: Donkey Kong is [[BanjoKazooie Mumbo Jumbo]].
* KeepCirculatingTheTapes: ''VideoGame/{{Jetpac}}'s'' mere inclusion, even the [[VideoGame/DonkeyKong original Donkey Kong]]'s (almost arcade perfect) inclusion, and the fact that both are "necessary'' to win it to beat the game, have probably kept this game from being re-released on VirtualConsole. Your best bet is to either look on eBay or hope they do a remake.
** Also, when converting a game to a new platform (whether by porting or emulation) it's often helpful and sometimes necessary to consult the original development team and documentation (like the source code), which Nintendo probably doesn't have access to since Rare left for Microsoft.
* NamesTheSame: [=DK64=] level "Crystal Caves" shares a name with a song in ''[[VideoGame/YoshisIsland Super Mario World 2]]''. [[ExactlyWhatItSaysOnTheTin That plays in cave levels.]]
* ThrowItIn: The DK Rap was originally written as a joke by Grant Kirkhope, but the developers liked it enough to include in the game.
* UrbanLegendOfZelda: Several, the most notable being an inaccessible room in Creepy Castle with a glass wall. If you stand on the hallway outside of it and use a first-person perspective, you can see a tall, carved stone pillar with a Monkeyport (teleportation) pad for Tiny nearby as well as a purple banana balloon floating over it. The room appears to be useless. King K. Rool's control room also features five steel kegs with the Kongs' faces painted on them. Probably nothing more than a little detail, but it sparked some speculation back in the day.
** Until people learned how to get to the room. The Monkey Port pad is in the Stock Car Race room across the hall, behind the Frantic Factory model. In order to get into ''that'' room, you need to get Tiny into the ballroom. All Tiny has to do to get in there is have Diddy open the door and switch characters before it closes.
*** [[EmptyRoomPsych Then people began to question why a room that required that much effort to get to was empty, which lead to more rumors.]]
** The fact that this was the first Donkey Kong game since VideoGame/DonkeyKongCountry not to feature a Lost World sparked a lot of urban legends back in the day.
* WhatCouldHaveBeen: Some text in the game's coding suggests that this could've been compatible with ''[[VideoGame/BanjoKazooie Banjo Tooie]]'''s scrapped Stop-N-Swop feature.
** Fungi Forest was going to appear in ''Banjo-Kazooie'' as Fungus Forest, but the level was (among other levels) scrapped from that game due to time constraints. A picture of Fungus Forest can nevertheless be seen in Banjo's house.
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