Let's say the 3 is equal to three numbers and the 9 is equal to a specific year of the PixelTail Games devs. Basically it should be 200 and 9 so, 2009 wich is the year when GMT began for the first time.
Now this show us this trello card is nothing else but the Lobby 1 Map remastered. (Maybe called Lobby 3 if i was dreaming)
Now you know the thruth.