Much like the previous game's title, the title for this game, "Freddy Fazbear's Pizzeria Simulator", is a Double-Meaning Title. Besides describing the "Pizzeria Tycoon" portions of the game, it also describes the location in which the game takes place it's a "simulation" of a Fazbear's Pizzeria meant to lure Springtrap, Baby, Molten Freddy/Ennard, and The Puppet/Lefty to a location where they believe they can once again continue to murder innocent children, only for them to be trapped and destroyed within.
When one purchases Lefty, it has an entertainment value and liability risk of 9 each. It makes more sense when one considers that Lefty is actually the Puppet, who seems to love children and never want to hurt them, but seems to have... issues when it comes to adults.
Furthermore, the risk value comes from whether or not something (and that "something" turns out to be one of the killer animatronics) is hiding inside. There most certainly is an animatronic hiding inside Lefty, as the Puppet is using Lefty's body as a disguise.
Why does Lefty not get shown during the Good ending cutscene? Because if the implications that it's the Puppet wearing the suit underneath are true, which does get addressed by the Cassette Man, then she too has met the same fiery fate and peace.
Out of all of the killer anamatronics, why is Lefty the only one allowed on stage, near children during the day? Because as it's the Puppet in disguise, it has no ill will towards kids.
It's possible to receive a lawsuit accusing one of your animatronics of having hurt someone... even if you have yet to purchase and/or salvage a single animatronic. These might simply be comically pathetic money grabs by parents trying to con you, but perhaps there's more to them than that. The story of the game eventually makes it clear that Cassette Guy has been deliberately trying to lure all the possessed animatronics into your restaurant throughout the entire game. Even if you refuse to salvage any of them, they're probably still hanging around in the alley directly outside of the pizzeria, hoping to find a way inside. It's completely plausible that they might maul anyone unfortunate enough to wander into that back alley, or even briefly break into the restaurant just to cause trouble.
This is supported by the fact that you will sometimes have to fight off animatronics in your office even though you never salvaged them as a result of them hiding in larger objects you buy. This proves that at least some of them are capable of breaking in without your permission.
The Puppet's origins are alluded to as early as the second game, when the Phone Guy briefly discusses his uneasiness around it. "It can go anywhere" because it was designed to go anywhere, even outside the perimeters of the restaurant, to help a child in need. "It's always thinking" alludes to the fact that this puppet is different from the mindless drones that Phone Guy would be used to, having worked with the company since early on.
At the end of each day, you hear a male voice say "Don't forget Saturday you want them all to be in one place." The question is this who is he referring to: the customers or the salvaged animatronics?
If you subscribe to the theory that Michael infiltrated the company multiple times under the guise of all the named Night Guards in the franchise, it would certainly explain why said guards kept coming back; Michael knew his father's creations inside and out, so he could effectively keep them at bay with minimal trouble. This theory also gives a Justified reason for Custom Nights: Michael could tamper with the AI of every animatronic because he probably helped with writing the program.
The theory makes some other things... interesting as well. For example, "He always comes back," probably is meant to apply to William. But in keeping with their Strong Family Resemblance and that he's been mistaken for his father before, it can also be applied to Michael, who keeps coming back because presumably he's trying to investigate and undo what's happened to the kids.
On a less pleasant note, the theory gives a possible explanation as to why the night guards would crank up the A.I.s to 20 during custom nights. As Michael implied in the very last cutscene of Sister Location and as Cassette Guy/Henry confirmed, Mike's a Death Seeker. Perhaps his wish to die just overwhelmed him at times, and he put himself in the most dangerous possible scenario that he could in an attempt at something like Suicide by Cop.
This has been confirmed by the official logbook - Mike Schmidt is Michael Afton under a fake name.
The Budget Animatronics (Happy Frog, Mr. Hippo, and Pigpatch) match up to some of the masks that appeared in the Happiest Day minigame. Pigpatch himself is a callback to Porkpatch.
Cassette Guy/Henry seems to have a fairly elaborate scheme going on, one that would possibly have required him to know how the animatronics work which he would have, having worked on them but also keep track of which animatronics were still active. It probably took a lot of time to plan. Then you recall that during FNAF2's Night 5 call, Phone Guy said that with the building on lockdown and the investigation going on, they were going to try and contact the last location's "previous owner". The owner of Fredbear's Family Diner. HENRY. Henry's known about what Afton's been doing for decades and been trying to find not only what's been going on, but a way to end his former partner's madness...
You would have expected that going back to Freddy Fazbear's would have brought back the old camera-watching mechanic that's been missing for the last few games, but nope, all you get is a motion sensor. Why? Because if you had cameras, you could see that the animatronics aren't wandering the pizzeria you're building they're wandering Cassette Guy's death maze. It'd completely spoil the Wham Line of what this location's true purpose is.
On a first playthrough, you'll probably find yourself wondering how a salvage team could look through the insides of Springtrap and not notice the obvious corpse inside him. It makes perfect sense once you learn that Cassette Guy already knew the truth about the animatronics, and it's the entire reason he deliberately sought them out.
There's always been a bit of a question as to how Michael survived his scooping. This game, through the blueprints you can find in the Insanity Ending, answers it. The Scooper/S.C.U.P.E.R was one of many items shown, and it had the purpose of implanting a material known as 'remnant' into the animatronics, which had something to do with tying souls to the robots. Michael had it used on him. His decayed body is now akin to the robotic shells that hold souls to them which also explains why he would die in the fire too, as remnant breaks down under intense heat.
If you believe that the cheesy enrollment tapes are canon, it might seem strange that they're almost cartoonish in their portrayal of Fazbear Entertainment's corruption. That's the point. Notice the purple-suited man with the over-the-top grin that couldn't possibly be mistaken for anything authentic? That's a portrayal of William Afton, Henry's partner and the co-founder of the company. Henry is using these tapes to mock William and his shoddy business practices.
There's more evidence to suggest that Henry was the night guard at Fazbear's Fright than there is for Michael. First, Phone Dude welcomes the protagonist back, promising that things will be more interesting this time. This implies a previous physical interaction at the establishment, which Michael, being a walking corpse by this point, couldn't have done. Second, the night guard passes out as he experiences hallucinations, which Michael shouldn't suffer from. Third, it's implied that the Fazbear's Fright fire was caused by the guard. Only Henry knew at that point that fire could work at exorcising William. Finally, there is some circumstantial evidence. Henry, being the creator of the animatronics, is just as capable of hallucinating the Phantoms (though he is the only one to provide a solid psychological explanation for their appearance: his ultimate plan to burn up his legacy). The Puppet appears on one camera with a reflection on the floor, which could have clued Henry in to the fact that the Puppet had spectral powers that needed to be contained, leading to the creation of Lefty. Springtrap would be just as willing to mumble "help me" to Henry as Michael. Finally, the Phantom Puppet's hallucination may be different because this character represents Henry's daughter, and thus would affect him far differently than the others.
The existence of Remnant explains William Afton's behavior when cornered by the ghosts of the slain children. Remnant has the ability to bind the immaterial soul to objects in the material world (in this series' case, animatronics). However, while William knew the effects of Remnant, there's nothing to indicate that he ever studied the properties of the human soul. His entire experience has been seeing and causing the animatronics to wreak havoc. So, when he goes to Freddy's one last time to dismantle the animatronics, he thinks it will be a simple job of destroying the children's new "bodies", leading to the cessation of their existence in the ultimate cover-up job. When he discovered that the souls could act separately from their shells, he couldn't account for this, and so he panicked. But his salvation was close at hand. He knew that he could bind himself to the Springtrap suit and gain immortality himself. Seeing no other option, he leaped inside. This is why he laughs at the children before he dies. This is why the children aren't satisfied with his death.
Likewise, this explains the existence of the springlock suits and how they're, at first glance, a death trap. Hint: it isn't a trap. For you, anyway.
Why is Afton able to speak despite being reduced to raspy grunts and animalistic screeching in the third game? If you look closer at the inside of the suit's mouth, you can see that the metal rods that were jammed into his jaw are gone, meaning that when he got a chance to patch up his suit, he likely freed up some of the more fractured portions of the springlock suit so he could move easier.
Something that makes this game even more of an odd one out is this: based off of 1's placement in the timeline, every odd-numbered sequel take place after it, while even-numbered ones take place before. 1 is somewhere in the middle of the story, 2 takes place years before, 3 is long after both, 4 is long before all three, 5 is probably directly after1...and then 6 middle fingers the cycle and goes even further, ultimately taking place after3. Spot the difference?
In the first game, we played as security guard Mike Schmidt, who was guided by a voice on the phone to stop 5 haunted animatronics from killing him, and was haunted by hallucinations of Golden Freddy and the newspapers of the Missing Children. But as the series went on, more information was discovered: Mike Schmidt was a cover name for Michael Afton as he infiltrated the pizzeria, the Puppet went from the 87 restaurant to this one and was trapped there, and the haunted children were only malicious because they were being egged on by the Puppet, and William, their killer, either was already or soon was trapped in the Spring Bonnie animatronic in the safe room. Fast forward to this game, and its all but outright stated we are playing as Michael Afton, who is guided by Henry on the cassettes, as he fights off the undead killer Springtrap, malicious ghost/animatronic Scrap Baby, a captured Puppet in Leftys suit, and the original 5 children in Molten Freddy. The series has reached Book-Ends.
The animatronics in this game that aren't the salvageable ones are relatively tame looking (save for Music Man) in regards to the retro-creepy animatronics of the first game or the ultra shiny ones of the second or even the fourth game. This ends up making sense as these are the only animatronics that presumably William had no hand in making, so they are straight entertainment machines rather than having a devious purpose that Afton barely bothers hiding under intentionally cute but unnerving-looking suits.
I was in the middle of asking under Headscratchers why it mattered how hot the office was if it was really Michael we were controlling in the nighttime segments; He was already a dead corpse that was only still moving because exposure to Remnant caused his soul to stick to the corpse, so why does a hot office make him pass out like it would a normal human? Then it hit me—the Remnant. Remnant is stated to break down at high temperatures. Michael isn't passing out, his old corpse is finally keeling over as the Remnant breaks down enough to release his soul. This doesn't count as a loss because it leaves you a sitting duck for the animatronics, it counts as a loss because Michael doesn't stick around long enough to fully help Henry with his plan. As for why you get to watch the full ending cutscene even as the temperature surpasses what would knock you out in any other night? Michael's soul was released far earlier, but this time it's waiting for everyone else to follow suit.
When you get the Bankruptcy Ending, the game closes on you. When you re-open it, all your achievements are gone. The only things you have left are any certificates you've earned. It makes sense you lose all your achievements, as anything of value was probably liquidated to take care of your bankruptcy.
Doubles with Tearjerker. But as we know what all significant characters sound like (I.E. William, Michael, and now who is thought to be Henry), it implies that Phone Guy was truly innocent and really had no idea about what was going on, only to die simply for being loyal to the characters he loved.
Another tearjerker fridge horror. We thought the original Animatronics found peace at the end of FNAF 3, but now it seems that somehow Baby or Ennard have gathered 'all those little souls' once again, potentially to possess other Animatronics to continue to kill people alongside their own murderer, no less. I'm glad they could finally find peace, for real this time.
There are two possibilities that are equally as horrifying. The first is that there are even more children that were killed by the Purple Guy than we originally believed, and that these are the ones that Baby planned to get her hands on. The second possibility? The Bad Ending of FNAF3 was the canon ending.
Am I missing something? I don't remember any direct references being made to the original five kids (other than Puppet) appearing in this game. It's fully possible that FNAF3's ending was the end of the story for the original Bonnie, Freddy, Chica, and Foxy, but the Puppet remained until now.
Actually, there are. Through a combination of Candy Cadet's three stories (each involving five kids/kittens/keys being stiched/melted together into one) and some of Molten Freddy/Ennard's quotes, it's heavily implied that the remains of Ennard somehow managed to pull a Happy Ending Override, and drew the original five souls into them.
There's also the possibility of the spirits finally noticing that Springtrap is still alive, coming back to the living world to find a body...and then met Molten Freddy.
At first, you'd think Scrap Baby's new giant claw would be a bit overkill... But remember just what she was designed to do? Forcibly drag children inside her frame with that same claw. It provides a chilling alternative to the above Fridge Horror in the sense that it implies she'd dropped any pretense of civility and found new kids to kill.
The fact that if you were a brand new company that bought the franchise and decided to open a legit safe pizzeria... these guys would still come to you to continue the horror. Even if you had 0 child murderers and ghosts... Don't worry, the child murderers and ghosts will come to you!!
Not to mention the possibility that that's what's really been happening. Pizzeria Simulator sets up the idea that all the companies that took over the Freddy/Fredbear franchise could have been making genuine attempts to redeem it, they just got caught up in a constant tug-of-war between the forces trying to truly exorcise the animatronics and the ones trying to keep the animatronics active.
This also implies that Fazbear Fright was one such attempt and the fire that destroyed it was arson in an attempt to destroy Springtrap... only, he survived, and they needed to go back to the drawing board.
The Racing Minigame. Taking the proper turn in Lap 4 takes you to a sort of 8-bit adventure game where you control Orange Man as he drives around between a couple of locations, including his home and (apparently) a bar. Neat Easter Egg, right? ....No. Go back to the racing game and watch the bottom half of the screen: that's oncoming traffic. You're not racing anybody, you're just a drunk driver. Specifically, a drunk driver who thinks you're in a car racing.
For even more horror, recall how in the Security Puppet minigame, the Puppet forces itself to the alley where the child is killed in the SAVE HIM minigame. If you brighten the image, what do you see going off the screen? Tire tracks. Further, if you look at the source code for the Racing Minigame, one of those lines is Later that night. We just saw William Afton get away with his first murder.
Cassette Guy is quick to condemn William Afton to Hell, but seems to think that Elizabeth will head on to a better place, despite Baby being just as murderous as Springtrap. This all but confirms something that the games have hinted at throughout the series: the souls possessing the animatronics cannot fully be "themselves", but rather become a mixture of the animatronic's AI with added human intelligence. More primitive animatronics, like Springtrap, will simply be the entire personality with a couple of the machine's limitations (e.g. being distracted by noise). Sophisticated animatronics, like Baby, eventually overpower the soul's will, especially if that soul is frail, like a child's. Poor Elizabeth Afton never seemed to be possessing Baby in the past because she wasn't in control. Baby was.
To add farther weight to this, Henry even says "And to you monsters trapped in the corridors be still, and give up your spirits. They dont belong to you.", strongly implying that the robot AI and the children are separate beings stuck together in the robot body.
So, as we all know, Lefty is just a suit used by the Puppet, right? Wrong. Look at the blueprints for Lefty. Lure, encapsulate, fuse, transport, and extract, huh? And his mic is noted as a "dream wand"/soother, which sounds suspiciously like what the music box does. Lefty is designed as a trap for the Puppet...which means the Puppet didn't go willingly. And it also raises a few questions regarding Henry's methods...
True, but even if the Puppet meant well, it shouldn't be allowed to be on the loose pinning more innocent souls into animatronics. Henry figured she deserves her rest, too.
If Lefty was designed as a trap for the Puppet, that could be why they attack you. Puppet may not be in control of their own movements anymore.
This is supported by the blueprint for Lefty stating that he's designed to administer constant electric shocks to whatever is inside him, either to paralyze them or hijack their movement ability.
To make matters worse, it's implied that the capture measures didn't completely work. After all, if Lefty was successful, why do we need to lure him to the new establishment? We don't hear any music box tunes, nor do we see any signs of electric shocks being administered. Lefty might have kept the Puppet from just appearing wherever she wanted, but it's clear who's still in control.
Dig Fruity Maze. It's obvious on the third run through, but all throughout the different levels, you can catch sight of a smiling, yellow bunny on the map that you can't interact with. It's a little hard to tell because of the art style, but if you look close, that bunny is popping up out of the ground. We wanted to know how Springtrap had such an easy time catching and luring his victims, since he hardly looks anything like something a kid would trust. Now we know: he waits until he finds an emotionally vulnerable child and exploits their trauma to get them to trust him. And if the "grave" in the Racing Game minigame really is an allusion to The Twisted Ones, then we finally know how Springtrap managed to just go around existing all this time: he hid underground.
The revelations of this game (i.e. the animatronics putting themselves back together, William deliberately making it so he could have robotic shells possessed by children's souls) suddenly put a much more sinister twist on the words we hear spoken to the Crying Child of FNAF4. We know that someone was talking through the Fredbear plushie could William have intended to put the Child inside an animatronic too? And if so, did it work and are they still out there?
Despite the divisiveness of Springtrap's new design, the increasingly decayed appearance gives some more insight into the body horror The Purple Man has gone through. All skin and most of the organs have burned away, revealing that the ears of the costume are jammed into the skull (and possibly the brain). The eyes no longer have an organic appearance, meaning that either these are the original animatronic eyes that must have crashed through his head and ballooned out his real eyes from the back...or that he screwed in a pair of new ones. Either way, he lost his original eyes in the fire, as well as his jaw. His new jaw looks nothing like his old one, looking more animatronic in appearance, meaning that he jammed the piece into the remains of his skull to maintain his trademark cleft chin.
This only really applies if you suscribe to the "Nightmare Animatronics are Real After All and are the Twisted Ones" theory, but subverts the "Big Brother is Michael" theory. As noted on the WMG, despite the theory's popularity, when we see Michael, he more closely resembles the child in the fourth game than he does the older brother (Michael has brown hair instead of black, a lighter skin tone and slimmer frame). Now the "Nightmare Animatronics are real" theory has Afton tormenting seemingly his own son with the Twisted Ones while monitoring him. What does this mean when we take it into account? Further credence to "All the players are Michael", but may also possibly make the kid a bigger woobie than we previously thought. If especially if you buy into William corrupting his own daughter, what better person to have as your lobotomized lapdog than your own traumatized son?
Random items can be marked down, indicating that there may be something "hiding inside", warning the player that purchasing them may result in an animatronic breaking into the facility. Fair enough with the larger items, but how does an animatronic hide in, for instance, Pan Stan?
It's even worse with #1 Crate; how do you hide inside an empty milk crate?
The epitome of these would be the Paper Plate Pals, who are... well, paper plates.
The most likely explanation is that objects you buy are shipped in crates, and the animatronics are hiding inside those.
You get money by playing and rating your own establishment's attractions...
...presented as "performance bonuses". Maybe Fazbear Entertainment likes to incentivize franchisees to test attractions themselves and make sure they're working as intended? Given the context of the situation, it wouldn't be surprising.
If you suscribe to the "All the night gaurds are Michael Afton" theory, there is one issue that seems to get in the way; his mere appearance. How does on go from location to location, applying under a different alias each time, and no one raises any suspicion over a walking decayed corpse applying for a job? This becomes especially questionable if you take Jeremy and Fritz into account, and how Michael applied to the same job, at the same location, on the same week, under two different identies, all the while being an obvious revenant whose appearance caused his neighbors to hide from him. If that wasn't convoluted enough, we are supposed to believe he has been doing this for years and no ones the wiser.
We don't have an official chronological placement of Sister Location, so it's possible that every game other than 3 and Pizzeria Simulator took place before, meaning that Michael would just be a normal human during 4, 2, and 1, and would only be a rotting corpse during the third game (which isn't problematic since it's possible that Fazbear's Fright was an earlier attempt to free the children's souls and destroy Springtrap) and this game (which wouldn't be a problem for Henry, considering what their plans for William and Elizabeth are).
Its also possible that the jobs are signed up for over the phone, or something equally removed. Its not exactly out of character for the franchise, and it would mean that nobody would actually see Michael before his first night on the job, or possibly ever. As for Fazbears Fright, Michael being a corpse might explain Phone Dudes offhand comment about Michael being part of the attraction.
Maybe Mike's just gotten really good at makeup? Also worth noting that at least two of the previous protagonists were fired, partially, for their "odor". That could be a euphemism for "we noticed you rotting and it freaked us out".
It also takes the "One day? Really?" note from Fritz Smith's pink slip (the guard from FNAF 2 that was only there on the Custom Night) in another light, in that instead of "You got fired after one day? Seriously?", it could be "You couldn't stay away for even one day? Really?"
There's another possibility. The guards get paid close to minimum wage for the relevant year, which initially just seems like Black Comedy all this danger and you still only get minimum wage? However, in many places in the US, it's legal to pay a disabled person less than the minimum wage. Michael is a rotting corpse. He doesn't smell too good, and he may have movement problems at this point. It would be very easy for him to fake being a disabled person who has hygeine and mobility issues, and then say that he's covering his face due to scars from whatever "disabled" him. He's taking the guard jobs because he can't get any other jobs due to his disability, and it's likely that Fazbear Entertainment would be struggling to find people willing to work for them, so it's in everyone's "best interests" to rush the interview process.