This is the worst movie I've ever seen. Even for a cult movie it's honestly just not worth the watch. It bored me to death until after the end. Wish I could have those 90 minutes of my life back. God, how awful.
This show is getting better and better with every season. In season 1, almost nothing is known about those giant monsters living on the other side of the wall. Then, in season 2, everything starts to make a little bit more sense. Although season 2 can be a bit boring at times: they dragged out the waiting game too much, not a lot happened. But! Do continue, because season 3 is where it gets really, really good. I'm not going to spoil anything, but it's totally not what you might have expected when you started watching season 1!
If you liked this movie, then check out Nerve (2016). It has the same movie gimmick: a populair app where players have to complete assignments, with viewers from home. I enjoyed that movie better, but maybe that's only because I watched that one first (so this one kind of feels like a rip-off).