A nifty hack made Mario a playable character in 1994's Donkey Kong Country

Mario and Donkey Kong have been rivals, frenemies, go-kart competitors and tennis partners. The Italian plumber once kidnapped Donkey Kong’s son. DK once, uh, took over Mario’s toy company (?) and stole a bunch of little figurines for some reason. They have history. What they haven’t done, however, is appear as playable characters in one another’s platforming adventures. Thanks to a nifty bit of hacking, that just changed.

Mario is a playable character in a hacked version of the SNES classic Donkey Kong Country, due to a ROM programmer called RainbowSprinklez. It’s appropriately named DKC X Mario and this is not a simple sprite swap. We wouldn’t waste your time with that. Mario had to be completely engineered into the game, as his moveset doesn’t exist in the original code. Donkey Kong is a lumbering beast. He doesn’t spin around, double jump and carry items. Check out the video and prepare to be impressed.

This is a Mario that has been pulled from Super Mario World, with regard to both sprites and controls. There are mushrooms to make him grow, fire flowers and, of course, everyone’s favorite dino-thingie Yoshi. Otherwise, this is Donkey Kong Country. The levels are the same. The enemies, consisting primarily of King K. Rool and his army of Kremlings, are the same. If you're really familiar with the layout of the original DKC, this could be a way to breathe some new life into the ancient platformer.

The music also looks to be altered, replacing the original tracks with songs from Mario, Zelda and Mega Man games. RainbowSprinklez wrote that the hack was "made for no other reason than I like Mario" in a document released alongside the ROM. You can download the whole thing right here to give it a go, and this should probably be done sooner than later. Nintendo isn’t shy about sicking lawyers on projects like this.