Diegoshark�s dumps are most hacks.
Ok, I don't know who is diegoshark, but I saw a page telling the story about the dump.
http://snes-forever.blogspot.com.br/2011_02_01_archive.htmlIn summary, it says that the Mortal Kombat III cart is very rare, but diegoshark could put the hands in the game and dump.
Which says that is not a "unnatural hack" (such dump a game and the hack only exist in virtual files, but not in real physic media) but a dump from a altered game released physically in black market... :p
EDIT: The post in Orkut from diegoshark talking about his dump
http://www.orkut.com.br/Main#CommMs...9456773988&kw=mortal+kombat+2+e+meio