Weird Dreams is a cinematic platform game developed by Rainbird Software which was published for the Amiga, Atari ST, Commodore 64, and DOS. A modified version served as the visual component to a phone-in quiz on ITV's Motormouth. The game was planned for release on Amstrad CPC and ZX Spectrum, but both versions were cancelled

The game starts where the novella ends, with Steve lying on the operating table and slipping into the dream world. Steve is controlled by the player through numerous surreal worlds. He can collect certain weapons and items on these levels, but with a few exceptions, cannot carry them to another level. Steve has no health meter, but there is a heart rate monitor, which goes from 75bpm (normal) to 100bpm (in frightening situations) to 170bpm (shortly before death). He immediately dies if he comes into contact with an enemy or an obstacle. He can also die if he remains too long in certain areas such as the Country Garden, where a lawnmower will come and decimate him. When Steve dies, the game returns to the scene in the operating room where the surgeons attempt to save him. There are no save points in the game, and instead of score points the player's progress is stated as a percentage and a time counter.

It is possible to activate an ingame cheat code for infinite lives: the player has to be standing in the right hand side mirror in the Hall of Mirrors (working as a hub to access the scenes) then input the morse code for S.O.S. (3 short strikes, 3 long strikes, 3 short strikes) using a specific key from the keyboard ('Help' key on Atari ST).

There are 15 different enemies/challenges, 7 different death animations and 5 different musical scores by C64/Amiga musician David Whittaker on the Amiga. Barry Leitch did the music for the Commodore 64 and PC version. The game also features a couple actual pieces of music, such as Country Gardens and Dance of the Sugar Plum Fairy.