The Game is great. I suppose this is a suspense game? It makes me feel nervous and intense when I choose different options. Such as when I click the button and the top ceil suddenly is lowering.
I would say a puzzle or a more logical concept can be added would make it even better. Since now I can't see any logic to determine which path is real and not-real. This would make the player only randomly test all the options. This experience would decrease the participation of the player since they won't value their action in the game. They only need to try every options and memorize the paths without using their mind and thinking.
As you mentioned, We need to risk our own life to figure out the real or not real things. However, a game without any guide and prediction would simply make it a random game.
A button in a room, that would seem obvious that there is a trap. This can give player some information to anticipate and predict the result, which require player to think. A red and green doors would appear the green may be good and the red may be bad. This also gives information to player to decide which path to choose. These are good examples that give information to player and let them think which to choose.
But after that, sometimes there will be another green and red doors choices again, which makes me to not knowing the logic behind it and kind of confused. When the player can't figure out the pattern or logic behine. They would simply try everything aimlessly and they would value their game experience less.
(I am not good at making game, this is just my little thought so feel free to ignore it and hope it didn't offend you.)