The FNaF Movie trilogy is a movie adaptation of the Silver Eyes series.

Here's the stuff I've come up with to support this theory:

1. The first movie has some similarities to Silver Eyes, like, 1. In one scene, Foxy chases Abby through an arcade, ring any bells? In the Silver Eyes, Foxy hunts down Charlie IN AN ARCADE. 2. The movie ends with William Afton getting springlocked and dragged into the backroom, JUST LIKE IN THE SILVER EYES.

2. The second FNaF movie, while not like the Twisted Ones, includes the introduction to new animatronics, just like in the Twisted ones. Also, going off of the tag-line and people's theories saying someone is gonna kik the bucket in the FNaF 2 Movie, just like how Charlie is being hunted down by the Twisted Ones.

3. The second movie will feature Springtrap, JUST LIKE IN THE TWISTED ONES.

4. It would make sense for the trilogy to end with an SL movie.

   That's it for now, if I remember anything else I thought of, I'll make an update!

   BTW, this is just a theory, I'm not saying this is the truth.

   I have more theories I want to make so stick around for those!