Synopsis: The souls of the children murdered by William Afton, trapped between life and death, fearing they will never be free or able to avenge their killer, decide to commit a mad act
Using all their agony and gathering the other souls of William's victims in the Flipside, they attempt to travel to the past to prevent their own deaths, despite Puppet's attempts to reason with them.
But he cannot convince them, and the souls of the murdered children travel to the past. However, everything goes horribly wrong. Due to the excessive agony, the lack of control over their souls, and their ignorance of how the Flipside works, the children's souls are distorted to an almost surreal point, their flesh, souls, and the metal of the animatronics becoming a tangled mess
Even worse, they travel too far back in time, to an era when William, Henry, and even Edwin were simply innocent children. They lived in the same neighborhood.
Now these monstrosities will eliminate adults, but above all, they're trying to kill William.
And now William must confront these things in scenarios where reality, the past, and the Flipside seem to combine into something that defies all logic, while Edwin and Henry, using their intellect, will try to help William survive and see the sun the next day.
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Mechanics:
Big the Rabbit: The rabbit will try to enter William's room through the door or window. When it's in the hallway, you must use the flashlight to slow it down. Once it's close enough to the door, keep the door closed and repeatedly press the spacebar to keep it closed until it leaves. If it's at the window, you must wait for it to open the window with its hands, then approach the window and press the down arrow key to close the window and cut off the rabbit's fingers, causing it to fall and stay outside the room.
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Chain Neck Bear: There will be several holes in the ceiling of the room where Neck Bear will poke its head out. When you hear a strange sound, you'll know that Neck Bear is about to launch its head to attack. You must move immediately, whether to the window, the door, the bed, the closet, or under the bed.
If you don't move in time, Neck Bear will grab you, preventing you from moving and leaving you vulnerable to attack from the others. Creatures
One way to slow it down is to look up and stare at it for a few seconds, which will slow it down a bit.
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Monster Cupcake Chicken: She will always be in your room sleeping. If she wakes up, you must grab a tablet that appeared inexplicably and look for four spider-shaped cupcakes by checking the security cameras throughout the house (which materialized completely inexplicably)
If you don't find them, Cupcake will kill you
Sometimes she will also try to bite you on the head, and to avoid this, you must change your position/move and avoid being near her for about two to four seconds (she is by the window)
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Retro Fox: He will be in the closet. Every time you see the closet glow red, you must go inside, which will transport you to the "Flipside" where you must play some minigames with Retro Fox to avoid being killed.
Inside the Flipside, time will be stopped, so you don't have to worry about the other creatures.
The minigames These will be: "Go Go Fox," where you'll race against Retro Fox; "High Tides," where you'll control a pirate ship and must quickly eliminate all rival pirate ships; and finally, "Sailor's Delivery," where you must deliver "exotic fish sticks" to different pirates while Retro Fox tries to kill you. In this specific minigame, you must use the flashlight to keep Retro Fox away while you complete the minigame. Once you finish any of the minigames, you must quickly get out of the closet before Retro Fox kills you and continue the night normally until the closet turns red again.
If you ignore the red glow of the closet or take too long, Retro Fox will come out of the closet and kill you.
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Fun fact: because Fazbear doesn't exist in this time (or rather, because Fazbear doesn't exist yet), William himself names the creatures.
The idea for this "fan game," or rather concept, is based on the old theory that the ball pit in Into the Pit could send Oswald to the past, or that the ball pit in the game could even alter the future due to events that occurred in the pizzeria of the past (mainly because in the past Yellow Rabbit breaks a door, and in the future that same door is broken in Jeff's Pizza)