What makes it different from others?

While it doesn't offer any answers, it both thrills and makes you think.

A movie that not only functions as a solid scarefest but a razor-sharp satire.

If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.