Since there was no official Donkey Kong Country 4 for the Super Nintendo (SNES) Go to product viewer dialog for this item.
" refers to several fan projects, ROM hacks, and unlicensed bootlegs. The Fan Remake: " The Kongs Return donkey kong country 4 snes rom work
ROM hacking occupies a gray area. The original game’s code is copyrighted by Nintendo. To stay legal: Since there was no official Donkey Kong Country
Gameplay: The physics and controls are surprisingly tight for a bootleg, though it lacks key features like animal buddies. The original game’s code is copyrighted by Nintendo
The Search for Donkey Kong Country 4
What you’re likely referring to is a ROM hack (a fan-made modification) or a mislabeled bootleg. The most famous one is Donkey Kong Country 4: The Kongs’ Return (or similarly named hacks). Below is a review based on playing such a ROM hack.