You begin at the top of a lighthouse, but you can't remember how you got there.
A 2020 version utilising PunyInform made this game available for various 8-bit (and other retro) platforms, such as the BBC Micro.
[+] Users currently playing this game
Nice game with decent puzzles. One of the last puzzles required some external knowledge I didn't have, so I needed the walkthrough for that. Except for that, it was pretty good.