this genre of faux competition-reality series reminds me of
(2012 TV series) for some reason. The fake documentary is along the same vein. It's not a mockumentary This Is Spinal Tap
(1984) but I'll take a mockumentary rather than a fake competition-reality film
This setup just gets them 16 people on-camera at all times plus the crew which sets up a nice premise for ticking off one at a time horror movie style cliche.
When it mentions "in the vein of The Blair Witch Projec
t" I think of "The River" tv series with all handheld camera work.