I love horror, it's my favorite genre. I've seen 200+ horror movies, this is easily in the top three worst ones I've ever seen. All of my friends who have gone to see it feel the same way, so I'm honestly quite surprised at the number of good reviews. The concept was really cool to me and I was actually very excited to see where they went with it. The clips they use in the trailer are the only good clips in the movie. Nothing in this movie is scary. I wasn't scared or anxious even one time throughout the film. The pacing is horrible. It's extremely slow and it takes an hour for literally anything to happen. The characters are not well-rounded, so you don't end up caring about them enough to care if they survive or not. The actors are supposed to be in high school but most of them look like they are in their 40s, so it's not believable at all. It would have made A LOT more sense if this took place at a college/university. The plot is extremely under-developed and most plot points are never explained or thought out in a way that made them feel important or interesting. I found myself getting SO bored. The "twist" is also highly predictable, which to be fair happens quite often in horror, but maybe the ending would have been able to take this from a 1-star to a 3-star if I hadn't seen it coming from a million miles away. I would recommend that you skip this movie. If you're curious about it, wait til it becomes available to stream for cheap instead of wasting your money at the cinema. Super disappointing snooze-fest.