The Tulpa Effect (2011)

Found footage web series set in the Slenderman mythos. Found footage web series in the form of a Youtube vlog uploaded by a young woman named Marissa, who posts about her boyfriend, Roger's, interest in Slender Man. Roger is set on filming his own Slender Man video in the same vein as Marble Hornets, EverymanHYBRID, and the other well-known Slender Man series. However, Roger's interest in Slender Man suddenly disappears when he comes to the realization that his project may unintentionally manifest the Slender Man, under a theory known as the Tulpa Effect.