The fnaf 1 movie had a similar ending to the silver eyes where afton got springlocked in the building and he got dragged away,

The fnaf 2 movie was like the twisted ones where other animatronics tried killing people outside and then they tried to kill the main characters but the fnaf 1 animatronics destroyed them

And Scott was only making 3 movies and guess what? There were only 3 books in the series!

So the 3rd movies gotta be similar to the 3rd book.

But hey, that's just a theory...

A FILM THEORY, THANKS FOR READING!