1 = Door 1 2 = Door 2 3 = Door 3 After you open a door, wait a few seconds for the button to appear. To start over, press the flag to reset the rounds.
I made the score not reset so you can see what is your total score for every time you played. Trust me, it is random. I have stuck with one door for more than 20 rounds and still I didn't win. Don't worry that is not a glitch/bug it is just the randomizer. I have fixed most of the glitches, but there may be a few left. Tell me if you see any and I'll be happy to try and fix them!