The style of the game is perfect to this kind of game!
The menu give you right away the mood of the game. It makes it very unique! 👏 congrats!
I understand that you need to get all the key all. But why you should finish by the "frame" with the numbers? It's not very clear. And I feel a bit fustrated: On the right side, all the key all are completed but something is missing. Maybe add the logo of the "frame" with the key holes?