The Throne Room is a found floorplan in Blue Prince. It’s a late-game room and doesn’t really come into play until after you reach Room 46.
Finding the Throne Room floorplan involves adding one of the game’s Permanent Additions to the estate, Blackbridge Grotto. Once you unlock and draft the Throne Room, it’ll set you onto a new set of mysteries.
Our Blue Prince guide will show you how to unlock the Throne Room and explain everything you can do with it.
[Ed. note: This guide contains spoilers for Blue Prince.]
How to unlock the Throne Room floorplan in Blue Prince
Unlocking the Throne Room floorplan involves a couple other puzzles. First, you’ll have to open Blackbridge Grotto by powering up the Laboratory via the Boiler Room and solving the two puzzles inside.
Then, you’ll have to find all three Microchips to open the door in the grotto.
On the other side of that door in Blackbridge Grotto, you’ll find the blueprint.
How to draft the Throne Room in Blue Prince
Picking up the Throne Room floorplan permanently adds it to your draft pool. There don’t seem to be any restrictions on where it is placed either east-west or on its rank. Drafting it costs 5 gems.
The inside of the throne room is disappointingly simple. The first time you enter, you’ll find a Sanctum Key to the right. That’s next to a king chess piece.
Beyond that, the only other thing to interact with is a lever behind the throne. That will open the northern door inside the Antechamber (which will save you having to trek down to the Underground the next time you want to visit Room 46).
What to do in the Throne Room in Blue Prince
The Throne Room’s description simply says, “Reclaim the crown.” Doing so, however, is anything but simple.
If you’ve read Lady Epsen’s Diary, you’ll know that it’s possible to draft the Antechamber in the Outer Room. Doing so requires you to have the Blessing of the Monk from the Shrine and you’ll have to call it a day in the Antechamber.
When you draft the Antechamber over along the West Path and then open the north door, you’ll find a new note that (finally) gives you your clue: “Steady is the scepter, deadly is the stone, heavy is the crown, ready is the throne.”
Where to find the scepter in Blue Prince
The scepter is the hardest of the three items to collect. It’s the culmination of an estate-spanning puzzle that will likely (definitely) take you multiple in-game days.
You’ll have to take a Power Hammer (Sledgehammer + Battery Pack + Broken Lever in the Workshop) to the room with the chess puzzle in the Precipice. That will reveal a pair of clues.
That will send you looking for fragments of a code spread across multiple rooms that will ultimately lead you back to the chess puzzle room. There, you’ll have to perform a castle (the chess move) by solving the chess puzzle twice — selecting either the king or the rook the first time, and the other the second.
Then, you’ll have to solve a series of Mora Jai puzzles in the next room for another series of clues that tell you to be back in this room with no items, money, gems, or keys at a specific time.
AND THEN, you’ll have to put the code you constructed into practice and solve a clock puzzle by entering three different times. That will get you the Key of Aries that unlocks a special chest that only appears if you draft the Treasure Trove in the Outer Room (via the Blessing of the Monk).
That is where you’ll find the scepter. Whew.
Where to find the stone in Blue Prince
The stone referred to in the clue is related to the “The Curse of Black Bridge” book that you can buy in the Bookshop.
Once you buy it and request if from the Library, it quietly adds an item to the Mount Holly Gift Shop (that only unlocks after you’ve been to Room 46 for the first time). The next time you draft the gift shop, you can buy the Cursed Coffers for the appropriate amount of 13 coins.
This adds the coffers — a gothed-out chest — to the Shrine.
Head to the Shrine with a Sledgehammer (a key won’t work). You’ll get two warnings about what a bad idea it is (just like the story), but smash it open and pick up the Cursed Effigy (you fool).
This unlocks Curse Mode (and curses you). For two days, you’ll:
Lose one resource every time you draft a red room
Lose one step every time you draft a bedroom (purple room)
Lose one key every time you draft a hallway (orange room)
Lose one gem every time you draft a green room
Lose one coin every time you draft a shop (yellow room)
Where to find the crown in Blue Prince
There are, technically, two crowns that you can find in Blue Prince. The one you’re after here is the Crown of Blueprints, not the red paper crown from the Closed Exhibit.
It’s actually the easiest (well, as easy as anything in this game is) to pick up. All you have to do is reach Room 46 for a second time. Luckily, if you draft the Throne Room (above), you’ve got a new lever to open the north Antechamber door. You’ll find the crown on the desk inside.
When you have it in your inventory, you’ll be able to remove red rooms from that day’s drafting pool. Doing so will earn you a gem.
How to reclaim the crown in Blue Prince
The crown can be grabbed on any day that you open the north Antechamber door. The scepter will stay in your inventory once you turn it blue and call it a day in a blue room — you’ll have to turn it blue for it to work in the Throne Room anyway. The effigy is the only real problem, so it’s safest to just stash it in the Coat Check until you’re ready.
Once you have all three items, take them all to the Throne Room. Doing that will turn the Throne Room blueprint into the Throne of the Blue Prince. With that new floorplan in hand, drafting eight blue rooms in a row will unlock all blue (the symbol, not the color) doors permanently.
For more Blue Prince guides, see our lists of all safe codes and all Shrine blessings, or learn how to solve all Gallery puzzles.
