In post 107, mith wrote:Take Two
4 Mafia
9 Townies
Each Day, the Town votes to lynch two players. Town win on any day by lynching a pair of Mafia. Otherwise, alignments are not immediately [edit]or ever[/edit] revealed. Instead, at Night, the Mafia chooses two players to kill, with the restriction that exactly 1 of the 4 lynched/killed players is Mafia.
After Day 3, there is no Night. Instead, if the Town has failed to lynch even a single Mafia out of the six players chosen, scum win immediately.
Otherwise, the game resets to Day 1 and all players are again alive.
If after the second Day 3 town has not won by lynching a pair of Mafia, scum win.
With completely random choices both days, EV is 40.63%. However, about 70% of games will get to the second cycle, and town will do a bit better than random in these games by taking into account the information from the first cycle. For example, the probability of a first cycle Day 1 win is 1/13, but on the second cycle Day 1 town knows that 2 of the last 5 players were Mafia and one of those pairs is already ruled out so they can win 1/9 by picking another pair from that group. I suspect the true EV is pretty close to 50%, maybe eventually I'll work out all the details.
(This is an open/vanilla version of a Tragedy Looper or Majora's Mask game which has been bouncing around in my head for a while.)