This is the only version of Original Adventure officially endorsed by the game's creators, Will Crowther and Don Woods. It was designed for Kaypro computers and is quite rare. The Certificate of Wizardness mentioned at the end of the photocopied documentation is no doubt even rarer! It is unclear whether this disk came with this manual, or whether it is from a separate version of Adventure published in Micro Cornucopia, a Kaypro Magazine.