*Poppy Playtime Chapter 4* introduces some of the most challenging puzzles in the horror game series, featuring cryptic riddles that can stump even the most seasoned players. If you find yourself stuck, don't worry—the comprehensive guide below details all the puzzle codes for *Poppy Playtime Chapter 4* along with step-by-step solutions to help you navigate through the game seamlessly.

The first puzzle you encounter is in the cell block area. Head to the top floor and enter the observation area where you'll find a code terminal, a red button, and a whiteboard. There's also a playful red button next to an animal cutout, but it's just for fun—feel free to press it or ignore it.
The code for this puzzle is derived from the numeric values of the letters that spell out the winning word in the game of Hangman: CELL. The code you need to enter is:
3255. After entering the code, press the red button to unlock the door at the far end of the cell block.

This puzzle will clear the red smoke from the prison block. Minimize your time in the smoke as you head to the control room upstairs. Locate the code panel near the front window and a whiteboard with a sticky note that reads, "check the CAGE." The top row of the calendar on the whiteboard has four scrambled letters, and the code is the number values corresponding to the letters in the word "cage."
The full code is: 3642. Once entered, the smoke will dissipate, allowing you to exit through the newly-shattered window to your left. While you can revisit the now-clear downstairs area, there's nothing new to discover there.
Related: All Characters and Voice Actors in Poppy Playtime: Chapter 4

After your encounter with Doey, you'll find yourself trapped in the prison's recreation yard. Ascend the stairs to the office at the top of the blue tower, where you'll find a code terminal and a whiteboard listing colors. The list of colors serves as your first clue, and the second number on each tower is your second clue.
The correct number sequence is derived from the second number on each tower, in the order of the colors listed: blue, green, yellow, and red. The second number on the blue tower is missing, but the sequence on the other towers suggests it should be 33.
That means the final code is: 3021. Retrieve the lever from the locker, insert it into the blue panel in the prison yard, and attach the chains from each tower to the door. Pull the levers to open the door and proceed.

The Secondary Labs puzzle involves matching numbers to images of stuffed animal anatomy. This puzzle requires you to track down the remains of each experiment and interact with them to add their number to the database. However, navigating the Doctor's Domain is tricky, as many rooms are filled with the red smoke from the control area.
You now have a gas mask, but it provides protection only for a limited time. The most efficient strategy is to explore the gas-filled maze in short bursts, then return to the operating room to refill your oxygen tank using the dispenser there.

The experiments are hidden within this maze, and you'll need to follow the sounds and dialogue to locate them. The noises get louder as you approach, which can be challenging if you have hearing difficulties or are in a noisy environment. Once you've found all five experiments, head back to the operating room where you'll see each experiment on a monitor with a string of numbers. The last number in each string is what you need for the code, and the anatomy chart next to the dispenser provides the order: head, right arm, left hand, right leg, left foot.
The code to enter is: 35198.
With these puzzle codes in hand, you're well-equipped to progress toward the unsettling conclusion of *Poppy Playtime Chapter 4*.
*Poppy Playtime: Chapter 4 is available now.*
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