In role-playing games, metagaming is a term often used to describe players' use of assumed characteristics of the game.
Various factors can contribute to sleep terrors, such as: 1  Sleep deprivation and extreme tiredness. 2  Stress. 3  Fever (in children). 4  Sleeping in unfamiliar surroundings. 5  Lights or noise. 6  An overfull bladder.
Night terrors happen less often than nightmares, and can sometimes seem like nightmares, but they are different in several ways. Night terrors do not happen during dreams. Night terrors usually happen in the early part of the night, often about 1 to 2 hours after the child has gone to sleep.