The Dark Crystal is a graphic adventure game based on Jim Henson's 1982 fantasy film, The Dark Crystal. The game was designed by Roberta Williams and published under the SierraVenture line in 1983 as Hi-Res Adventure #6: The Dark Crystal. It is the first Hi-Res Adventure released under the SierraVenture line, the previous games being released under earlier names and later re-released under SierraVenture. An alternative version of the game for younger players called Gelfling Adventure was released in 1984.