I play with my mobile phone joiplay. When the game reaches the second floor, the black screen will operate normally, but I just can't see anything. I don't know why.
Thanks for playing and also sorry to hear!
Sadly that is a emulation thing. Some other person reported a similiar problems as well when playing on mobile with an emulator. As far as I am aware of, it happens because of the emulation so there is sadly nothing I can do about it. It may be solvable with some settings in the emulator but sadly I am not familiar with mobile devices or the emulator so I can't give any advice on that-_-
I can just garantee that it works on windows and (soon) linux systems unfortunately. Sorry that I can't be of any help-_-