“…Moreover, players and spectators do not necessarily have to be known, but can be strangers. The "Dancing in the streets" examples and the mobile game by Stro ¨mberg et al [2] presented earlier are examples where players might not know each other or even who is participating in the game. While arousal, and consequently enjoyment, is lower when playing against strangers, it is still higher than playing against a computer [28].…”