The Prototype Cartridge
Exact details about what the cartridge is and how it was distributed are currently unknown. Officially, it is a Sample (Demo) of the game. There are three premade saves which cannot be overwritten. The cartridge was probably released in limited quantities to gaming magazines and professional reviewers. Copies these days are hard come by, running up to $500 on eBay and 20,000 yen on Yahoo! JP auctions. The ROM has been fully dumped and is the source of most of our game hacking.