The Hidden Room is a room connected to the Hidden Tunnel and the Basement. It was added in Update 1.3 . It is made from stone, and the room also has small wooden pillars touching the walls. Like Tunnels and Vents, Granny has no access to the Hidden Room.
In one corner of the room is a weathered wooden table. The Note will always spawn on this table, and there's a 40% chance of the Winch Handle or the Special Key to spawn on this table. At opposite ends of the room are archways, one connects to the Basement and other connects to the Hidden Tunnel.
- The Note (which always spawns in this room) is seemingly left behind by the Previous Victim of Granny.
- Dropping an item on the floor of this room creates no noise.
- Strangely, Granny can see the player inside the Hidden Room when lured close to the doorway and will knock the player out if he/she doesn't enter the tunnel quick enough.
- It is unknown whether if this is a glitch or intentional.