Thanks for playing the game! I'm not sure how I'd go about permanent hotspot markers at the moment, but maybe I can think of something. My current framework uses invisible boxes as hotspots. The middle mouse button also triggers the hotspot hints, if that helps.
Maybe I'm too embedded into the bdsm and fetish community (even got an irl master), but foot and spit stuff isn't very unusual here. For these kinds of games, I need to make what I personally enjoy. This may limit my audience, but my main drive for my adult game projects is passion for these things.
I really like the idea of content tags. I'll try to add that to my next game. And a more detailed volume slider is an easy fix. Gonna put that in the next update. :)
I'm not sure yet how I'll handle in-game goals and hints for my next project. I'm kinda old and used to old adventure games from the 90s, but I can see how getting stuck or item hunting is annyoing for sure.