True, but the genre/medium itself is broader than the conventions some have settled upon. The sense of being trapped is another sub-genre / experience that escape rooms can offer. Sounds like that's more popular in the European escape rooms, with all the negative safety implications:

> One survey of escape rooms by Scott Nicholson of the Wilfrid Laurier University in Canada found that in 43% of European escape-room players, once locked in, are dependent on staff outside the room. Some venues in eastern Europe even handcuff escapees to the scenery, as part of the challenge.