Thank you for the kind words Bengar! Regarding dev time, honestly it was about 5 minutes to fix a graphical bug that I couldn't have known until uploading to itch (half of the screen was black only in the web build). So it's technically dev time, but I probably spent 30 minutes waiting for Unity to reload the domain during development anyway :P
And thanks for the feedback! Glad you enjoyed it. You're too right about the mouse thing, I couldn't think of a way to fix it until just after submitting I realised I could have locked the cursor and made a custom in-game one that allowed you to go below. Oh well. At least it's a little more controllable in fullscreen.