The Kristal is an action game/adventure game first released in 1989 for the Amiga computer. It was later released for the Atari ST and MS-DOS. It was developed by the UK-based company Fissionchip Software, and published in Europe by Addictive Games and in the US by Cinemaware. Unusually for a video game, the game is based on a play, , written in 1976; the authors of the play worked together with the game developers and the play was never shown in theatres or on film before the game's release. A dialog introducing the setting recorded by Patrick Moore, who introduced both the game and play.