The biggest positive about this one was the concept. You have seen the "it's a game, surprise it's not a game" many times, but this one has an interesting and seemingly original twist that made it feel fresh. Unfortunately that about all it had going for it.
The plot really went nowhere. Not much of a story to be had here. Felt a bit more like an undercooked proof of concept than anything. It wasn't super scary although I quite liked the aesthetic of the bad guy, nothing wildly innovative but he looked spooky. The acting from everyone involved was below mediocre here, particularly the participants... although scruffy guy with the blonde girlfriend was alright.
There was definitely some potential to be had with the concept/plot but unfortunately it was squandered with some poor writing and some poor acting that provided for a kind of generally boring movie. Probably wouldn't recommend.