The supposed title screen for the game
Twelve Tales: Conker 64, (previously called Conker's Quest), is a cancelled video game that was supposed to be Conker first debut but that ended up being Diddy Kong Racing. The game itself was supposed to be released on the Nintendo 64.
As audiences thought the game was cute and colorful, Rare decided to change the game to Conker's Bad Fur Day, as it was criticized for being another innocent platformer as there was Diddy Kong Racing and Banjo-Kazooie.
In 2000 when the game was announced to be converted into Conker's Bad Fur Day, most thought it was an April Fools Joke, but were proven incorrect when Conker's Bad Fur Day was officially announced on media.
On September 17, 2012, IOneIFalcon of RareMinion leaked a thirty minute footage of the game online. The footage is able to be viewed here.