The Hitchhiker's Guide to the Galaxy (novel) productions in the late 1970s. Davies himself appears as Prosser. This edition is out of print – Adams bought up many remainder copies and sold them, autographed, on his website. There have been three audiobook recordings of the novel. The first was an abridged edition (), recorded in the mid-1980s by Stephen Moore, best known for playing the voice of Marvin the Paranoid Android in the radio series, LP adaptations and in the TV series. In 1990, Adams himself recorded an unabridged edition for Dove Audiobooks (), later re-released by New Millennium Audio () in the United States and available
The Hitchhiker's Guide to the Galaxy (video game) spent reacting to situations, such as the impending deaths variously threatened by bulldozers, matter-transference hangovers, the Ravenous Bugblatter Beast of Traal, or nuclear missiles. Like many Infocom games, an InvisiClues booklet was available for this game, as a separate product. The Infocom version of "The Hitchhiker's Guide to the Galaxy" became a fan favorite; it was one of five top-selling Infocom games to be produced in Solid Gold versions, with a built-in hint system not included in the originals. The game was re-released by Activision in several collection packages before rights reverted to Adams, enabling The Digital Village to re-release