Poppy Playtime Chapter 4 uses four numerical codes to open key doors and advance through Safe Haven. The codes are tied to specific puzzle rooms, so entering the right number at the right terminal is what moves the chapter forward.
Poppy Playtime Chapter 4 codes
3255— Prison terminal code3642— Red gas chamber code3021— Prison Yard tower code35198— Secondary Labs anatomy code
Where each code is used
3255 opens the first terminal in the prison control room after the red hand section. The clue is the word CELL, which matches the four digits entered at the terminal.
3642 clears the next control room after the red gas sequence. The clue is CAGE, and the code is entered to stop the gas and keep the chapter moving.
3021 opens the Prison Yard locker after the chains are attached to the main door. The tower colors match the whiteboard clue, and the final code is entered on the keypad inside the tower area.
35198 unlocks the Secondary Labs anatomy puzzle. The code comes from the toy numbers and the anatomy chart order used in the toxic maze.
What happens after the code works
Each successful entry opens the next route in Chapter 4. The prison terminal door opens, the red gas sequence clears, the Prison Yard locker gives the final lever, and the anatomy lab path opens for the next stage of Safe Haven.
When a code is accepted, the matching door, room, or reward path opens immediately and the chapter objective updates. If the terminal stays closed, the code has not been entered correctly for that puzzle.