The Five Nights at Freddy's movie is jam-packed with action. But, of course, it's an adaptation of a video game series, so there's plenty of overlap. That includes several Easter eggs and teasers for fans of the games to try to spot. That said, unlike the Marvel Cinematic Universe's brand of Easter eggs, Five Nights at Freddy's served to nod to the fans that made the franchise so successful.
Source：https://www.cbr.com/five-nights-at-freddys-easter-eggs-explained/
