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) material, stating that "it survives the transition as wacky and spaced-out as ever". Though acknowledging that "there may be a few minor problems with "The Hitchhiker's Guide to the Galaxy"", the reviewer suggested that "the game is so engrossing, funny, and often so infuriatingly difficult that you'll hardly notice them". In May 1985 "Antic" called it an "extraordinary game" and "a step forward from Infocom's safe, established approach to game design" with "distinct and tangible" writing, "really the first stylistic departure since the "Zork" trilogy". The magazine stated that "Hitchhiker" was "not your run-of-the-mill text adventure" but promised that "the