Yup, this is an emulator for a book published in the 1980s https://en.wikipedia.org/wiki/Micro_Adventure https://en.wikipedia.org/wiki/Micro_Adventure (part of

Yup, this is an emulator for a book published in the 1980s https://en.wikipedia.org/wiki/Micro_Adventure https://en.wikipedia.org/wiki/Micro_Adventure (part of a series of 10, looks like the emulator has 6 of the books already!). I remember seeing these books in my elementary school library decades ago (pre-PC ubiquity) and wondering what to do with them.