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Players will encounter the train transport prison cells puzzle at the beginning ofPoppy Playtime Chapter 4, right afterfinding an alternative entrance to the Prison. Players will receive a call from Ollie, warning about the prison area and also assuring them that he’ll help the players along the way. The area is filled with colorful toy prison cells and the door to the control room is locked. Players will need to find the key to the control room and restore power to the cells to proceed to the next area.
How to Find the Control Room Key
Once the call from Ollie finishes, players must climb up to the transport prison cell on the train to reach the key for the control room. To do that, head towards the left side of the blue prison cell, andpull a large boxwith your Grabpack towards yourself to line up with the ledge.
After lining up the larger box next to the blue cell,pull a smaller boxto line it up with the larger box. This will help you climb on top of the prison cell and reach the suspended one on top.

Once you reach the open prison cell on the top, enter inside and look towards the left to spot a miniature toy creature with a key on its lap.Grab the control room keyfrom the prison cell and jump out of the prison cell.
Restoring Power to the Transport Prison Cells
Use the control room key to open the locked door. You’ll find a videotape inside that you may play on the DVR.Place one of your hands on the electrical sourceon the wall to channel current through the Grabpack.
Now head outside the control room and rope around the electric pole right outside the door. Next, you’ll need to head to the second electric pole near the blue transport prison cell to channel current through it as well. Lastly, head towards the front of the cartridges and shoot the other hand onto the electric panel on the side of the prison cell to restore power.
Doing this willunlock the door to the blue transport prison cell, allowing players to step inside and head over to the next area inPoppy Playtime Chapter 4.