The whole film was shot and contained from the perspective of an online chat room on a single PC.
Unfriended was the social media R-rated horror produced by Blumhouse, that managed to take a neat central concept and work with it well.
Now it would appear that Unfriended 2 may have pulled off the same scare tactic.
The original film is sometimes quoted as being one of the best horror movies of 2015, and at least it demonstrated some innovation for its jump-scares.