Brad! Janet! Rocky! Dr Scott!
And so on. Best musical ever. Now play the game!
From the instructions:
Your beloved – Janet (or Brad) – has been kidnapped by the evil Dr. Frank’n’Furter who has activated the diabolical Medusa machine to turn her (or him) into stone. Frank, however, has dismantled the De-Medusa (the only machine that will reverse the petrification process) and has scattered the parts around the castle. Frankie knows that you will attempt to save your partner, and it amuses him(?) to watch your feeble efforts as you collect the pieces and attempt to activate them! Time is of the essence as the castle is a disguised space ship and is on final countdown!!!
(Press Enter to start!)
The emulator used is Qaop/JS – a rather spiffy HTML5 Spectrum emulator.