https://motherboard.vice.com/en_us/article/a3anja/labyrinthe-japanese-game-discovered-on-private-forum

Until yesterday, rare Japanese PC game Labyrinthe, developed by Caravan Interactive, was long thought to be lost forever. That is until the almost mythical third game in the already obscure Horror Tour series was found on a 67GB folder of ROMs on a private forum. Other rare games from the folder are expected to become public soon.

Since its release in 1998, retro gaming fanatics have scoured the web for this game but come up empty. The game has a listing on Amazon Japan where the cover appears, but where it has never been in stock. A May 2014 post on Hardcore Gamer 101 reads “Labyrinthe is completely lost, and begs the question as to whether it was released at all.”