I have a habit of watching older movies when I have free time and have fallen further behind on the cool shit this decade than the last two, BUT there are also some horror movies the community loved that I didn't.
If your fave isn't on here, it's possible that I didn't see it yet, but also possible that I just didn't like it very much.
I really wanted to include Prometheus and Alien Covenant on, because I love them and they're pretty horror heavy, but it was easy enough to find 50 other movies.
Hopefully I'm not straining the definition of horror too much.