[jeffchien]

That's definitely a concern. Players call getting stuck by others' checks "BK'd" because a player once went out to get Burger King and returned before they got unwalled. But I think sharing the challenge/frustration and randomness with other players is the fun part, and that's what makes this such an interesting way to play games.

The organizer can also kick inactive players out and release their checks. You could play solo with one or multiple games.