5) There’s no meta-gaming

If you’ve played D&D or other tabletop role-playing games, you have almost certainly had “table talk”—where you and your compatriots talk about what’s happening in the game out of character. It’s fine when playing a game, but it would have been a disaster for the movie. Any kind of meta-commentary would have taken viewers out of the world of the film, by necessity, and would have marred the experience. The restraint directors/writers John Francis Daley and Jonathan Goldstein had to not include anyone in the film rolling a die is commendable.