Hi :) First off, thank you for trying out my game! The bug you encountered fits what some other players have experienced. Players using embedded intel GPUs have issues with the procedural generation. Are you running the game on a laptop by any chance?
I don't think there's much you can do on your side. If you want, you could send me your log file to help me investigate the issue. It's called "logs.txt" in the game's directory that you extracted. Make sure to edit it to make sure no personal info are in there.
You can reach me on Discord or Twitter through DMs. (The links are in the game description). I also have an email: curious.owl.games@gmail.com (I don't look at it that much though).
Thanks :)