A lovely little adventure that scores pretty much perfectly on theme as it evokes something of Appendix N more strongly than most. and the Science-Fantasy crossovers everyone knows regardless of whether they've ever read or watched one.
---
There's a situation that describes what happens after 10 rounds pass. Depending on how a group plays, the amount of rooms or POIs there are to check out, etc, this might mean that it happens when players aren't around at all or at the end of a session but I may not be clear on the mechanism meant to trigger that event.
I also see a few formatting errors that should be easy to rectify.
"Windmill - Creaks precariously. Touching the windmill. Before..."
In this context the "Touching the windmill" explanation is unbolded, inline, and probably wants or needs to be popped out from the surrounding text to prompt the reader that it's an explanation.
---
A very gameable entry and charming content all around!