The Paranormal Activity franchise was always good for a box office win, mostly because the series was cheap to make, meaning the movies didn’t actually need to make that much to be deemed successful.
The third entry in the franchise sneaks into the top 10 just ahead of another horror sequel, the recent The Conjuring 2.
However, more than one of the films have also been serious box office contenders, regardless of budget.
Paranormal Activity 3 has the distinction of being one of the few franchise entries that actually got decent reviews, which is probably why this is the only sequel in the franchise that made the top 10.