Cancelled sequelA sequel, The Restraunt at the End of the Universe, was planned but never was finished due to a bad consultant.
ExtrasThis game came with some of the most humorous software trinkets (Infocom called them "feelies") found in a game box. For example, you get a "Microscopic Space Fleet" (a closed ziplock bag with -- apparently -- nothing in it), Peril-sensitive Sunglasses (the lenses are solid black), etc.
GraphicsA version of the game with graphics added can be played at http://www.bbc.co.uk/radio4/hitchhikers/game.shtml. Unlike the version found at Douglas Adams' website, you can save and load in this one.
SalesAccording to DouglasAdams.com, the game sold around 350,000 copies. The site goes on to note that, with the development of graphics games, the human race rapidly abandoned all that it had learned about language resulting in Infocom's closing.
Contributed by Brian Hirt (10025) on Mar 08, 1999. [revised by : Patrick Bregger (98690)]. -- edit trivia