It's a well-executed production in every way. The puzzles in the game are simple but challenging. Maybe you could add more puzzles to the game to make it longer. By the way, I just noticed a small error. Even when the elevator door is closed, the outside scene can be seen reflected in it.
Pretty good atmosphere and lighting, but the lighting around the corners of the stairs is a little weird, and it would be nice if the player could choose to move faster.
