Got bored and poked around ebay after seeing the prototype for FF2: US. Not sure if it's the real deal or not. http://www.ebay.com/itm/Best-Of-The-Best-Karate-Proto-Sample-EPROM-Sega-Mega-Drive-Genesis-RARE-/110929271613?pt=UK_PC_Video_Games_Video_Games_JS&hash=item19d3e65b3d