The most well-known game carrying this specific title is an unofficial bootleg port developed by and released by J.Y. Company in 1997.

Because this hack is distributed as a (usually a .bps or .ips file applied to a legitimate DKC2 or DKC3 ROM), it is often mislabeled by casual downloaders as “Donkey Kong Country 4 (U) [!].smc.”

Downloading ROMs of games you don’t own is copyright infringement. While Nintendo has relaxed slightly on old ROMs in recent years, they still aggressively protect their IP. A fake DKC 4 ROM is still using Nintendo’s trademarks, characters, and copyrighted code—making its distribution illegal.

When you encounter a file with this name, it usually falls into one of three categories:

Over the years, several prototypes and beta versions of Donkey Kong Country 4 have surfaced online, fueling speculation that the game was indeed in development. One of the most well-known prototypes, dated to 1997, features gameplay and levels that are remarkably similar to the earlier Donkey Kong Country games.