Round 1, there are 16 mystery doors. At the beginning of each round, each and every player must PM me their door choice (from 1-16). When a player enters a door, they will encounter a unknown number of other players (all those choosing the same door). Each round only 1 player can leave the door. If no other players choose the door, then the same rule applies of only 1 player can leave the door, and that player gets a bye. [So for example in round 1 if 4 different players PM me the number "2" and only 1 player PMs me the number "5" , the 4 players will be in a 4 player game, and the 1 player will get a bye]. If more than 8 players choose the same door, then it will be divided in to two games and the two winners will play in another final match.
Round 2, there will be 14 mystery doors. Round 3, 10 mystery doors. Round 4, 6 mystery doors. Round 5, 4 mystery doors. Round 6, 2 mystery doors.
Once two players are left, they will automatically chose the same door. If (and only if) the last two players have played less than 3 games, the last round will be a best of 3.
When a PM goes out for a round choice, I (the host who is also playing) will respond to the first reply with my door choice. That way there is a QAQC on my door choice for fairness.
Settings: Game Type: Standard Settings: Automatic, Seq, Chained, Fog and esc spoils.
Map: Random of course.... otherwise it wouldn't be a mystery.