One of the main real - life inspirations was the existence of family - friendly restaurants with animatronic shows. These were popular in the past, and the idea of animatronics was borrowed for the game.
The real story of Five Nights at Freddy's is quite dark. It involves a haunted pizzeria with animatronics that come to life at night. These animatronics were originally made for entertainment but something went wrong, perhaps due to a tragic event in the past. There are theories that it's related to a murder or some sort of dark secret hidden within the walls of the pizzeria.
Well, the real story of Five Nights at Freddy's has to do with a spooky pizzeria. The animatronics, which are supposed to be fun during the day, turn into menacing figures at night. Some believe it was based on some urban legends about haunted amusement places. There might have been some sort of accident or crime in the past that led to the current state of the pizzeria being haunted. And the main character has to survive the nights while being watched by these creepy animatronics.
One of the real - story elements could be the existence of animatronics in pizzerias. In the past, there were pizzerias that had animatronic characters for entertainment. Another possible element is the idea of things going wrong with these animatronics, like technical glitches that might have made them seem a bit off or spooky.