Four ROM images from the early-in-development Japanese-language demo were leaked during the 1997 Nintendo Space World presentation: two debug versions of the games, and two versions that were modified to work on normal Game Boy hardware and most emulators. These ROM images were only rumored to exist, until they were anonymously posted on the ""Pokémon" Reverse Engineering Tools" (PRET) Discord server on May 26, 2018. The demo was quickly shared with members of the website "The Cutting Room Floor". The ROMs were analyzed and translated, and "The Cutting Room Floor" went on to release a spreadsheet containing all the information they had discovered, which includes a list of Pokémon species, Pokémon "moves", items, non-playable characters, maps, and music. The demo has a larger world map than the final game, and includes around 100 unused and changed Pokémon designs.