Conker's Bad Fur Day is a crude adult-oriented, action platformer by Rare for the Nintendo 64.
Take the foul-mouthed squirrel Conker, who has one hell of a bad fur day, through levels based on popular movies, even one made of poo. Yes... poo. Conker goes through all of this just so he can sleep off his hangover.
Conker's Bad Fur Day is a classic full of dark, vulgar humor, puzzles, cigars, booze, and fighting loads of enemies. Do you really need any more reasons?