Freelance journalist Lizzie Stark wrote the book on LARPing, literally. Her Leaving Mundania explains the fantasy world of Live Action Role Playing games from D&D-types to Nordic avant-garde art LARP. She explains the appeal in a short video for the BBC.
Stark reports that "even Queen Elizabeth I is believed to have been a 'LARPer' who dressed up to play games."
The video was filmed at Knight Realms in Sparta, New Jersey.