NotionGames looks very polished and obviously you have put a lot of time into it.
Can I suggest a few things as feedback.
1. Loading - why no % indicator. I spent over a minute waiting for it to load with no indication how much longer. I thought it had failed at one point and went off to do other things until i noticed it had loaded.
2. Opening screen -= I clicked on "start game" nothing happened. It was not clear o me I had to press keys and return to select and start the game.
3. I had no idea what I was doing on the screen with the doors. The doors didn't reach and one showed 0x3 or something like that - very confusing.
I will have another go later.
While it looks great I am not sure the $10 asking price is worth it. There are so many games available on the market that I personally wouldn't spend that much on a casual game.
All critique meant in constructive (no pun intended) manner.