Here you can play a copy of the lighthouse of doom, directly from within your browser.
The source code lives here, and the emulator came from here.
NOTE: This game was originally designed to run under CP/M, accessed via with a 80x25 serial-terminal. The ZX Spectrum typically has 32-character wide display, for this game I've put together a small font, allowing 64-character output, and wrapping is configured roughly. Use wrap to see the word-wrap column, and wrap 50 to change it.
My favourite easter eggs involve the telephone, can you find them all?