I'm thinking of running the classic game Werewolf within Dragon's Tale
as a Halloween event. Though we'd play for Bitcoins, the house wouldn't take anything. Here's how Werewolf works:
Three people are secretly picked as Werewolves. A werewolf knows that he is a werewolf, others do not.
Everyone else, about 10 people, are Villagers. One of the Villagers is a Seer.
Play proceeds in day-night cycles. During the day:
1. Werewolves can smell up to 1 other person to determine if they are also a werewolf.
2. Villagers can vote on a person to lynch. It takes a majority to lynch someone. Once a person is lynched, it is known whether he was in fact a werewolf.
3. The seer can scry one person to determine if they are a werewolf.
During the night:
1. Werewolves can attack. It takes 2 werewolves working together to attack.
The game ends when there are less than 2 werewolves (Villagers Win), or when there are no more Villagers (Werewolves win.) The pool of Bitcoins is split evenly among the living winners.
The game would be played within Dragon's Tale, starting at 2:00PM EDT (GMT-0400); each round would be about 10 minutes.