The atmosphere made it instantly interesting to play. This "not knowing what comes"-feeling is kinda good but for some points I´d wish to see a little more than just the objects. I bet the time killed the process so I think it´s not too bad. 

Nice combination of everything, looks creative.

This 3D game is short but cool. I think you could make it like an escape game by adding some riddles to the game. Players must use the mirror to solve the riddles to find the legendary flowers. The legendary flowers will bring light to the entire place, and you will get out of the room to finally plant the flowers in the ground or something like that☺️

This is good, it's a bit short, but given that you tried a 3D game I think that totally makes sense. I liked the atmosphere too, it kind of reminded me of Antichamber at the start. The controls and performance were also good, so I can see this being a great foundation / template project for 3D movement and interaction in your future games.

One other thing, I found that my mouse was perpetually focused into the game window after I clicked on it, and it wouldn't stop moving the camera nor could I see the mouse after hitting escape and exiting into windowed mode. So I would suggest adding a 'uncouple the mouse from the camera and show the mouse cursor when the player hits esc' functionality to improve the browser experience. Very solid work though!