I thought about the idea to find the timing with the real time, but not as a referee, neat idea!
I could only play the level 3 and 4 in the web build but I just needed 1 retsrat to understand the game (even without the turorial that I read after with that beautifull exit button haha).
I guess you could still had the how to play in the description for people inside a level but I guess it's ok with short level like that :)