Through the Trap Door/Walkthrough

You shall first have to connect your Sinclair ZX Spectrum, Amstrad CPC or Commodore 64 and cassette recorder to your television, then switch all three of them on; you will then have to place the cassette of Piranha's 1987 action game, Through the Trap Door into the cassette recorder, rewind it (unless it is your first time playing it), type LOAD "" (without leaving a space between the quotation marks) and press Enter to load the program into the console; while the game's rendition of that show's theme song is being heard, you can press K to redefine the default keys to any combination you want, or J to switch input to a Kempston joystick (if one is connected). You'll then have to press S to start the game - and a map for it was published in Kamikaze Guide magazine in February 1988, while a solution was published in Your Sinclair Smash Tips magazine in August of that same year (but, as mentioned on the game's main page, the show had been succeeded by the rather inferior cell-animated Stoppitt and Tidyup at the time the game had got released).