The truth About Marika lays its foundations in the Nordic larp (live action role playing) culture. Annika Waern and Marie Denward in their research ‘On the Edge of Reality: Reality Fiction in ‘Sanningen om Marika’’ report the following quote
“I am a larper and for me the Marika project is one huge larp. Everything screams larp, from aesthetics to issues you discuss” (participant-survey comment)
Here is a video of Martin Ericsson, former producer and creative director of The Company P, speaking at the Nordic Larp Talks
And here is an example of one of the biggest larp in Europe