ROM hacking occupies a gray area. The original game’s code is copyrighted by Nintendo. To stay legal:

The or behavior you see when the game crashes

If you downloaded a file labeled as an SNES ROM but it crashes your SNES emulator, try changing the file extension to .nes and opening it in an NES emulator like Mesen or FCEUX . 2. Modern SNES ROM Hacks (The True Successors)

: Built to replicate the exact physics and 2D pre-rendered aesthetic of the original SNES titles.

A full level-design overhaul using the Super Mario World engine. NES / Famicom Unlicensed Bootleg A 1990s pirate cartridge port engineered by Hummer Team. Step-by-Step: How to Make Each Version Work 1. Running the SNES ROM Hack (Rise and Repeat)

The official timeline for the SNES trilogy is:

Following that release, Rare transitioned its development focus to the Nintendo 64, giving fans the 3D platformer Donkey Kong 64 in 1999. Decades later, Retro Studios revived the side-scrolling formula with Donkey Kong Country Returns (Wii, 2010) and Donkey Kong Country: Tropical Freeze (Wii U, 2014).

It seems you are asking about whether a Donkey Kong Country 4 SNES ROM exists and works, and you’ve also requested to “develop a paper.”

: The hack refines the movement and jumping for both Donkey and Diddy, addressing the original's "slippery" feeling.

The short answer is that there is no official Donkey Kong Country 4 for the SNES

It uniquely allows players to choose between all four main Kongs: Donkey, Diddy, Dixie, and Kiddy The Status:

The Donkey Kong Country series has been a beloved franchise among gamers since its debut in the early 1990s. The series, developed by Rare and published by Nintendo, follows the adventures of Donkey Kong and his sidekick Diddy Kong as they battle against the evil King K. Rool and his Kremling crew. With its vibrant graphics, catchy music, and challenging platforming gameplay, the series quickly gained a loyal fan base. However, one game in the series has been the subject of much speculation and rumor: Donkey Kong Country 4.

The source of the confusion is cleanly historical. The original trilogy— Donkey Kong Country (1994), Diddy’s Kong Quest (1995), and Dixie Kong’s Double Trouble! (1996)—concluded Rare’s SNES development cycle. With the Nintendo 64 on the horizon, the team moved on to Donkey Kong 64 (1999). There was no fourth SNES chapter. The number “4” attached to the SNES engine is a retroactive dream, fueled by the immense popularity of the platformer and the abrupt shift to 3D.

While bootlegs are generally considered cheap, Hummer Team was known for being quite skilled at squeezing 16-bit visuals into 8-bit constraints.