Chapter 3: "Deep Sleep" is the third installment of the indie franchise Poppy Playtime. It was released on January 30th, 2024.

Following the Train crash which took place during Chapter 2: "Fly in a Web", the monstrous new antagonist CatNap makes attempts at killing the player through a trash compactor before the player fortunately escapes. Alongside a new character, Ollie, our player is tasked to restore power to Playcare and the Gas Production Zone in order to bring an end to CatNap's reign of terror. However, there are new characters in Playcare who have been tasked by CatNap and The Prototype to track down and capture the player.