I've been to murder mystery theaters where everyone becomes a character in the mystery, and I've played room-escape video games, but a friend just told me about another type of participatory theater called Room Escape Adventures. Has anyone here tried it? It's a game, available in a dozen U.S. cities so far, for groups of 12 people, who are given one hour to solve puzzles, collect clues, and find a key to get out of the room. Meanwhile, a zombie chained to a wall is gradually getting closer as the chain is loosened by one foot every 5 minutes. It sounds fun, challenging, and frightening, all at the same time.