In this update, I've added the features everyone has been asking for.

1) I added a main menu where you can change graphics settings and mouse sensitivity.

2) You can press Esc during the game and change settings again or return to the main menu.

3) It's harder to fall out of the elevator now.

4) If you do manage to fall out of the elevator you will get back into it.

5) Fixed various visual bugs that were causing confusion.

P.S. I plan to make a Steam version in November-December where there will be more anomalies and floors.