Thank you very much for taking the time to write such a detailed comment.
I really appreciate the honest and thoughtful feedback.
You’re absolutely right about the visual focus. I’m actually in the process of tweaking the image right now to make the valve feel more realistic and better integrated with the overall aesthetic of the game, and I’ll also try to improve the visual hinting so it doesn’t compete so much with the light on the left.
I chose a circular valve mainly because I really like the rotation effect in RPG Maker (it’s surprisingly tricky to get right) and the sound feedback when it turns, but I agree it needs to feel more coherent and grounded within the scene.
Your explanation about real valves is also very interesting, especially the note about cavitation. I wasn’t aware of that phenomenon, and I’ll definitely look it up and reconsider the sound design to make it subtler and more believable.
Thanks again for the great feedback, it’s genuinely helpful!!!