On the outside of the building is a slot where a pet that is a person can be placed. Inside the building there is an easel where the player can choose a combination of facial features that will generate a room. Most combinations are random but when a face that has been shown in the game is inputted the room will belong to someone. When it is someone significant's room, there is often a tool on their table.
When a face is selected, the area rumbles for a long time before the room is accessible. If you look at the door while the earthquake is happening, you can see the rooms appear to be falling past the door at high speeds. When it stops, you are able to enter the door located on the right.
When Paul deposits Care NLM, the Child Library tells him he has six months to change his mind.
It is revealed in Petscop 12 that only family member's facial features are in the options of the Child Library. Because Belle isn't part of the family, she has no room in the Child Library.
Mike's Room Edit
Michael Hammond's room that appears in Petscop 3. Paul enters in the face from the grave stone.
Mike is not inside right now. He is dead.
You may visit his room.The floor pattern has a dull red background containing glasses, a clown face, a flower symbol similar to the one on Even Care with only 4 petals, and a, O block like the one Marvin used in Petscop 6.
On the table are what look like a red tool and tweezers. This could be signifigant due to the theme of eyebrows in the game.
Mike (without eyebrows)'s Room Edit
This room appears when Paul enters Mike's face without eyebrows.
The floor pattern has a yellow background with presents, a road, stars, and a playstation controller (appears only on the walls). The present is particularly noteworthy due to Mike's gravestone saying "Mike was a gift". A playstation controller is also seen in one of the secret loading screen images above a piano.
On the table is a blue car (resembling the blue car seen in Petscop 2) and a Rubik's cube. By the bed is a figure with its feet placed on one of the roads in the floor pattern.
There is a heavy emphasis on cars and roads in this room, which may be related to Toneth’s description. Mike is mentioned briefly when he comments on Toneth, "Funny stupid blob monster". Then a story about a dog being hit by a car is told. It may be worth mentioning that Toneth appears alongside the O block (in normal Mike's room) in Petscop 6.
It's odd that, although Mike is dead, there is a figure in this room.
Care's Room Edit
Care's room, with her normal face which has no eyebrows. Paul gets this face from the outside of the Flower Shack.
Care is missing.
You may visit her room.The floor and walls are grey/white with a pattern of paint rollers and flowers.
On the table is a red tool and crayons/colored pencils. In the room is a note:
You say, "That's a puzzle."
You're secretly very excited to hear this news.
You're in the bathtub thinking about her.
I have a guess at which child you'll pick next.
When you find her room, the passage to my right will lead to her.
She'll appear from the darkness, limping, and I'll shoot her in the head.
Tiara says young people can be psychologically damaged "beyond rebirthing".
A young person walks into your school building.
They walk in with you. You're holding their hands.
They come out crying into their hands, because nobody will love them, not ever again.
They wander the Newmaker Plane.When Paul deposits Care NLM in Petscop 9, she appears in this room. He immediately picks her back up.
Paul's Room Edit
Care with Mike's eyebrows shown in Petscop 7. Paul confirms in Petscop 11 that this is his room, and later in that same video says that he and the girl Care is based on look similar.
The wall and floor pattern is purple and features a gear (possibly related to the windmill), the flower symbol also seen in Mike's room that resembles the ones on Even Care, and an oddly distinct X shape.
On the table are three letter blocks and a censored object. The blocks are C (pink), R (red), and E (blue). They seem to be about to spell Care. Under the black censor obscuring the right object there is a sliver of red. Paul cannot discern if the censored object indicates the game recognizes that he's put two faces together, and suggests maybe it could be in any room. It's odd that this seems to be the only non-random room without a tool on the left side of the table.
On the bed is a figure that appears to be wearing a baseball cap.
Windmill Girl's Room Edit
Taken from the sign Paul finds inside the windmill in Petscop 9.
You found her.
You may visit her room.When Paul enters the room there is a player character that looks exactly like Paul's avatar reading a note on the wall. They dissapear through the right side of the room. Later in the video, Paul makes that exact same movement towards the right side of the room.
The floor and walls are white/grey with gears (similar to the windmill), triangles, and the flower symbol that resembles the one on Even Care but with four petals.
On the table is a red tool and a miniature windmill. This room is noticeably brighter than the others.
On the back wall is a note:
You must have guessed, but I was looking through your things.
I found that picture of you from 1977, standing in front of an old windmill with your friend.
You went there, and it was a bad idea. Your friend and the windmill both disappeared into thin air.
Her sister was holding the camera. She took another picture minutes later: just you, no windmill, and no friend.
You married her sister, and years later, your friend was reborn as your daughter.
Your wife won't admit this is true, but I know it, because I found the evidence.
Your friend never returned with you, and the windmill was gone. I went to see it myself. Where is it? What did you do?
The name "Child Library" may be a metaphor for foster care, where children could be thought of as being "borrowed". Others have suggested it may have a human trafficking implication.
If you calculate the total number of possible rooms, you end up with 288,000 unique “faces”/bedrooms. This number may or may not be significant. The original calculation used for calculating this number came up with 144,000, which interestingly does have biblical ties to rebirth. For now, this theory may be busted, but if you’re curious, just google “144,000 rebirth”.
It also says "If you change your mind within 6 months, you can take Care NLM back." "6 months" is the legal limit of time for abortion, therefore implying the Underworld is really an Underworld of the dead, and that- after 6 months she will be abandoned and probably will "rebirth" yet again.
One redditor, scattergraymatter, noticed that the place in front of the Child Library where you can deposit "people" looks remarkably similar to some foundling wheels/baby hatches. These are places where mothers can anonymously abandon their children in a safe place they will be cared for. The wikipedia page says, "In Austria, the law treats babies found in baby hatches as foundlings. The local social services office for children and young people (Jugendwohlfahrt) takes care of the child for the first six months and then it is given up for adoption." This matches the time limit Paul is given to decide to pick back up Care NLM.