How to Open the Antechamber Doors in Blue Prince
The main goal of Blue Prince is to find room 46, and the key to this is opening up the Antechamber. Even if you reach Rank 9, and have a door connecting to the Antechamber, you won’t be able to enter without opening the doors first. If you’re looking for how to open the Antechamber Doors in Blue Prince here’s everything you need to know. How to Open the West Antechamber Door in Blue Prince The west door to the Antechamber in the Blue Prince is probably the easiest to open and get to. You can find the lever for this door in the Secret Garden, but there are a few steps to get here. First you will need the Secret Garden Key, which can be found in a number of locations. It can be the reward from completing the maths puzzle in the Billiards Room, it can be the special key found in the Music Room, or sold by the Locksmith. You can then use it on any locked door that is on the edge of the Holly Manor blueprint, and that room will become the Secret Garden. Not only will this spread fruit throughout the house, but by turning all of the pointers on the weathervane in the same direction then a door will open revealing the lever. How to Open the East Antechamber Door in Blue Prince The east lever can be found in the Great Hallway. This is the room that requires seven keys in order to open all the doors. In our trials, we couldn’t use the Lockpick Kit in this room making it more difficult to open it all up and find the lever. You can get lucky and find the level behind the first door, but you have to prepare to need seven keys in this room. The Foyer will help with this, as it opens every door across all hallways, including every door in the Great Hallway. How to Open the South Antechamber Door in Blue Prince This level is harder to pull as it requires two parts. Firstly, you will need to find the Broken Lever. This can commonly be found in the Workshop, and green rooms, but we’ve seen it appear in a variety of rooms. Then you need to draft the Greenhouse to attach the broken lever and open the door. The Greenhouse is a dead end, so you’ll need a few potential paths open. What is in Blue Prince’s Antechamber? Screenshot by Siliconera When you enter the Blue Prince’s Antechamber you will find the Basement Key. Unlike other Special Keys, this is the only way we have found to obtain it. The Basement Key can be used in the Foundation and in the Fountain to open the door at the bottom. While the Antechamber doors will reset every day, once you unlock the Basement doors they will remain permanently open. The lever for the north Antechamber door can be found in the basement, so this is the key to progressing towards your goal. For those struggling to find the north lever, you will need to enter the Basement via two of the three entrances. You will need to enter via the Foundation, and either the Fountain or the Tomb. You don’t need to use the Basement Key to enter through the Tomb, but you will need to solve the statue puzzle in that room. Blue Prince launched on April 10, 2025, for PlayStation 5, Xbox Series X|S, and PC via Steam. The post How to Open the Antechamber Doors in Blue Prince appeared first on Siliconera.

The main goal of Blue Prince is to find room 46, and the key to this is opening up the Antechamber. Even if you reach Rank 9, and have a door connecting to the Antechamber, you won’t be able to enter without opening the doors first. If you’re looking for how to open the Antechamber Doors in Blue Prince here’s everything you need to know.
How to Open the West Antechamber Door in Blue Prince
The west door to the Antechamber in the Blue Prince is probably the easiest to open and get to. You can find the lever for this door in the Secret Garden, but there are a few steps to get here. First you will need the Secret Garden Key, which can be found in a number of locations. It can be the reward from completing the maths puzzle in the Billiards Room, it can be the special key found in the Music Room, or sold by the Locksmith.
You can then use it on any locked door that is on the edge of the Holly Manor blueprint, and that room will become the Secret Garden. Not only will this spread fruit throughout the house, but by turning all of the pointers on the weathervane in the same direction then a door will open revealing the lever.
How to Open the East Antechamber Door in Blue Prince
The east lever can be found in the Great Hallway. This is the room that requires seven keys in order to open all the doors. In our trials, we couldn’t use the Lockpick Kit in this room making it more difficult to open it all up and find the lever. You can get lucky and find the level behind the first door, but you have to prepare to need seven keys in this room. The Foyer will help with this, as it opens every door across all hallways, including every door in the Great Hallway.
How to Open the South Antechamber Door in Blue Prince
This level is harder to pull as it requires two parts. Firstly, you will need to find the Broken Lever. This can commonly be found in the Workshop, and green rooms, but we’ve seen it appear in a variety of rooms. Then you need to draft the Greenhouse to attach the broken lever and open the door. The Greenhouse is a dead end, so you’ll need a few potential paths open.
What is in Blue Prince’s Antechamber?

When you enter the Blue Prince’s Antechamber you will find the Basement Key. Unlike other Special Keys, this is the only way we have found to obtain it. The Basement Key can be used in the Foundation and in the Fountain to open the door at the bottom. While the Antechamber doors will reset every day, once you unlock the Basement doors they will remain permanently open. The lever for the north Antechamber door can be found in the basement, so this is the key to progressing towards your goal.
For those struggling to find the north lever, you will need to enter the Basement via two of the three entrances. You will need to enter via the Foundation, and either the Fountain or the Tomb. You don’t need to use the Basement Key to enter through the Tomb, but you will need to solve the statue puzzle in that room.
Blue Prince launched on April 10, 2025, for PlayStation 5, Xbox Series X|S, and PC via Steam.
The post How to Open the Antechamber Doors in Blue Prince appeared first on Siliconera.