Quick tip: If you're making it purely an HTML Game with no Windows, Linux, or MacOS support, try to refrain from using escape cause it'll just kick me out of fullscreen, and mouse movement will be out of whack when moving.
That aside, I assume it is some kind of sandbox game where you just paint on the white tree. And if that's the case, it's not that great imo. The drawing mechanic is very bad, the canvas is very poorly represented in 3d, color picking is kinda weird, and the objective of following the theme is odd. I want to believe the escape dialogue changes other than just saying "whatever", but I do not know what even the criteria are.
I'm sorry, but I just do not see the appeal