Mao is similar to Bartog but with the following important variations:

  1. New players are not told the initial rule set (which is slightly different from the Bartog one, and varies slightly (radically?) depending on which group is playing it)
  2. When someone wins, they invent a new rule, which they do not tell the other players.

Mao related web pages:

You can play Mao against a computerised opponent, through your browser:

NomicLikeGames