Both Monarchs need to lose their Crowns in order to lose the game. If one monarch loses the Crown, the other can craft them a new one for eight coins. A crownless monarch isn't able to interact with anything and the Greed ignores them.
Both Monarchs need to lose their Crowns in order to lose the game. If one monarch loses the Crown, the other can craft them a new one for eight coins. A crownless monarch isn't able to interact with anything and the Greed ignores them.