Cool concept. I like how each fake object has a specific but obvious (if you know what you're looking for) tell. That is, except for one of them, which I got by guessing.
One of the objects in the room is 99% offscreen, which made it hard to examine it accurately. I thought that might be a screen size issue with my laptop, but it's like that in your screenshot as well.
Making it more obvious when you figured out one of the correct fake objects would have been nice. A counter keeping track of how many fake objects you've discovered and how many there are total would have been appreciated as well.
Going through the door didn't feel like the end of the game. I was expecting more, and the game didn't feel like it was over; it was a little anti-climactic, honestly.