I really appreciate your feedback, but I think i didn't get something: the "fake walls" are present in only 2 levels. Do you refer to them (the first in particular) when you say "perhaps there could be some sort of curvature to indicate where to go" , so to make it easier to distinguish fake from real walls?
Sorry if my wording was confusing. Yeah, the walls on levels 5 and 10. If you'll continue this project and use the feature in later levels as well, a slight dent in them to make it easier to distinguish where you could go through. For example, something like this (excuse my quick photoshop):
It is surely an option, but i like the way you can't really distinguish them until you throw the moon or, even easier, check the trajectory or the light. Anyhow, thank for the time you dedicated to this post
