Planet Virtual Boy forum users stumbled on a copy of the unreleased Faceball game for Virtual Boy. Known as NikoChan Battle in Japan, iterations of the game were published on a number of platforms by Bullet-Proof Software, including Game Boy and SNES.
Those looking to add the rare game to their collection are in luck; reproduction cartridges for Virtual Boy will be released in February for $100, while the ROM of the game will be free to download.