I recently made a camera manipulation update for my game, and suddenly the graphics has turned into this on mobile. The graphics on PC look fine. I tried every solution to solve this problem, but nothing worked.
I already knew that the auto scale tool is a thing, but I am wondering how to fix the graphics from being metallic black to its normal graphics on mobile that is showcased on the screenshot.
It looks like the mobile graphics are not rendering the sun properly. Try changing your graphics quality in settings, and seeing if that makes any difference.
The only light source you have right now is the sun. You could try to play around with the sun in lighting, to see if that makes a difference. If this doesn’t work, I think you will have to make some things like street lights to act as a backup. I know this will not be the same as the original Undertale map, but I can’t think of a different fix.
I don’t know that much about lighting though, maybe another post has had the same problem as you and solved it.