Blue Prince Complete Walkthrough

Enter the Office room and locate the desk with a slightly open drawer on the right side.

Interact with the open drawer to find a knob inside and twist it. Twisting the knob causes a large bust in the room to rise, revealing a hidden safe behind it.

On the desk, find a note addressed to Bridgette listing book titles.

Only March of the Count is not crossed out. “March” corresponds to the third month — that gives you the number 03.

Look around the room for small busts of Count Isaac Gates (ignore the large one above the safe). Count three small busts, which gives you another 03.

Combine the two clues to get the code 0303. Enter 0303 into the safe to unlock it and collect your rewards.

Go to the Boudoir room and find the safe hidden behind a mirror or folding screen.

Look around the desk or dressing table for a photograph, either attached to the mirror or sitting on the surface.

Interact with the photo to examine it more closely. The photo shows a Christmas scene, hinting that the safe was a Christmas gift.

The clue suggests using Christmas Day as the code: December 25. Try entering 1225 (MMDD format) or 2512 (DDMM format) — both will work.
Inside, you’ll find a gem and a red letter.

In the Study, find a table with a chessboard displaying a single black king on the D8 square.

Take note of the position: D8 is your clue. Interpret “D” as December (the only month starting with D) and “8” as the 8th day. This gives you the date December 8, which becomes the code 0812.

You’re safe to use 1208 to unlock the Study safe and grab the rewards — a red letter, a gem, and the Closed Exhibit blueprint.

In the Drafting Studio, find a calendar on the wall displaying the month of November (month 11).

Nearby, locate a diorama or picture of the Apple Orchard.

Use a magnifying glass to inspect the orchard image closely. Count the number of gates in the image – there are 8.

Combine the clues: 11 (November) and 08 (gates) to form the code 1108. Enter 1108 into the safe in the Drafting Studio.

Go to the Drawing Room and find the large central portrait of Herbert Sinclair. Notice the candelabra in the painting is bent, unlike the real ones.

Interact with the left candelabra on the mantle (the one that matches the painting). This reveals a hidden safe behind a wall portrait.

Look around the room and examine the paintings and drawings for clues.
Include the woman with a small gait (4 pictures) and the man with a small gait but ignore the animals.

Combine these numbers to form the code: 0415 (April 15). Enter 0415 into the safe to unlock it.

First, make sure you’ve powered up the red generator/fusebox in the Boiler Room to unlock access to the Red Door in the Underpass.

Basically, rotate the red pipe on the floor until it drives power to the red box. Check on the panel upstairs to make sure it’s powered.

When you reach the Red Door, you’ll interact with a letter lock.
The lock requires you to select three letters and one number.

The only day available is “8”. The month that fits with the letter dials is “MAY”.

Enter M-A-Y-8 into the lock and press the button.

Interact with the computer in the Shelter and select the “time-lock safe” option from the menu.

The game’s calendar begins on November 7 (that’s Day 1). Count how many in-game days have passed since then. Add that number to November 7 to get the current in-game date.

The next step is to pick an unlock time. The game always starts your day at 8:00 a.m., and time moves pretty fast.

Set the unlock time to at least one hour ahead of whatever the in-game time is. A safe option is to set it for around 10:00 a.m., just to be sure.

Once the date and time are set, you can either hang out in the Shelter or go explore. The safe will automatically open when the time hits.

You’ll have a four-hour in-game window to grab whatever’s inside before it locks again.

Center Operators

Blue: Addition

Yellow: Subtraction

Pink: Multiplication

Purple: Division

Fractional fill: Divide your result by the indicated number at that step

Bullseye Operators
Added to the total score after hitting a ring with a matching color. i.e. If blue, addition operations trigger the bullseye action)

Square: Square the result after the operation of the colored ring it appears on

Diamond: Reverse the digits of your result at the specified step

Squiggly line: Round your result at that step

Outer Operators
Applied to segment numbers before performing operations.

Red dots: Repeat the operation for that ring as many times as there are dots (up to four)

Red X: Skip that ring’s operation entirely

Red slash: Halve your result at that step

The telescope has two wheels you’ll need to adjust. The first is at the base of the telescope. Turning this wheel rotates it horizontally, letting you swing it left or right.

Then, go up the stairs to the upper platform, where you’ll find a second wheel. This one controls vertical movement, so you can tilt the telescope up or down.

You’ll know you’ve got it right when a glowing eye icon appears on the telescope. Once it shows up, you can interact with the telescope to look into the night sky. The first time you do this, you’ll see a single star.

In later runs, using the Observatory again adds more stars and unlocks constellations. These unlock permanent rewards – like extra Trunks, Steps, or Gems – that carry over into future runs, making the Observatory a great long-term investment.

There’s also a hidden bonus. After aligning the telescope, look closely near the lens for a secret compartment. Inside, you’ll find the Planetarium floor plan, which adds a new draftable room.

Start by examining the staff notice on the bulletin board in the room. At first, the terminal password looks scribbled out, but if you use a magnifying glass on it, you’ll reveal the password: SWANSONG

Once you’ve got the password, head to the terminal and log in. From here, you can change two key settings: the Security Level and Offline Mode.
Then, switch Offline Mode to UNLOCKED. With that setting, if you shut off power to the security system later (via the Utility Closet), all keycard doors will open even if you don’t have the card. This combo lets you access more rooms with fewer limitations.

After logging in with SWANSONG, type in a second code: swansonghss. This unlocks a secret video archive. You’ll be able to browse old security footage by year. Most clips are corrupted, but some — especially from 1987 — still work and show CCTV footage from rooms like the library.

First, head down the stairs to the first green boiler and turn its valve to start the process.

Next, you’ll need to rotate the red pipe to direct steam to the second boiler and the conveyor. This pipe helps guide the steam, so don’t forget to tweak it for the right flow

For the second green boiler, its valve is blocked by a moving conveyor. You’ll need to time it right to stop the conveyor at the perfect moment so you can access and turn the valve.

After that, hop in the elevator powered by steam (using the blue lever), head up to the upper floor, and turn the valve for the third green boiler. Then, flip the nearby blue lever to send steam to the control panel.

Now, use those blue levers and red pipes to guide the steam from all three boilers to the control panel on the upper floor. This will make sure everything is connected.

Once the steam is flowing, press the activation button on the control panel. You’ll also need to use the slider or lever to decide which room should receive power first.

Found in the Utility Closet, this puzzle uses six V.A.C. indicator lights and ends with a hidden lever behind the panel.

Start by turning all six lights green — click each light once.

Next, click 1st, 3rd, and 5th lights again to turn them blue, and 2nd, 4th, and 6th lights again to turn them red.

Now create purple lights by clicking any blue light that’s next to a red one — this turns both into purple. Repeat until all lights are purple.

After all the lights turn purple, press the fourth button to change it to white, then press the appropriate buttons to match the final color configuration.

Final sequence should be:
Off – Blue – Green – White – Red – Purple

When correct, the wall slides open, revealing a hidden lever that unlocks the Gemstone Cavern (+2 starting gems permanently).

To solve it, draft a Green Room card or use the Greenhouse to increase your chances of finding it, and enter the room, which usually costs 3 gems unless you’ve unlocked the Terrace, in which case entry is free.

Once inside, you’ll see an angel statue surrounded by a barrier and dirt patches you can’t reach yet. Stand in front of the statue, and look at the two pillars on either side for hidden switches at their bases.

Your cursor will change when you hover over them. Activate the switch on the right pillar first, then the left. After both switches are pressed, the barrier will drop, allowing you to reach the statue.

Behind it, you’ll find an Allowance Coin (Allowance Token), which grants you a permanent bonus of +2 coins each day. There’s also a note from Mrs. Babbage for some extra lore.

Apple Orchard behind the campsite.
 1. Look for a white picket fence near the Campsite.
 2. Find the code “1128” using the Magnifying Glass in the Dark Room (look for a heart on a tree in a photo).
 3. Enter the code at the gate to unlock it.
Go inside, find the gas valve near a small shack, and turn it on.

Gemstone Cavern left of the Campsite
 1. Solve the Utility Closet Breaker Box puzzle (fuse box).
 2. This clears the entrance to the cavern.
Enter the cavern and look to the right – the gas valve is there. Turn it on.

Hovel, a randomly available Outer Room
1. Unlock the West Gate Path and outer rooms by going through the Garage Door.
  2. Draft the Hovel as one of your Outer Rooms. Keep in mind that room selection is random – might take a few tries.
Inside the Hovel, find the gas valve near the stove and turn it on.

Schoolhouse, another randomly available Outer Room
1. Like the Hovel, unlock the West Gate.
 2. Draft the Schoolhouse as an Outer Room (random each run).
Enter the room and turn the gas valve behind the heater.

First, make sure you’ve unlocked access to the Underground. You can get there through the Fountain, the Tomb, or the Blue Flames Elevator.

Once you’re down there, go past the Red Door (make sure it’s powered via the Boiler Room)and look through the window beyond the gear puzzle.
You’ll see diagrams showing key reservoir water levels: 13 to dock the boat, 6 to ride it, and 0 for fully drained. The reservoir starts at 14.

To move the boat into position, go to the Pump Room and drain the reservoir once to lower it from 14 to 13. This sets the boat at the dock on the Foundation side, and its position is saved, so you don’t need to repeat this.

Now, to actually ride the boat, you’ll need to drain the reservoir further: from 13 to 6. This takes a few pump steps: first, drain with Tank 1 to drop the level to 9.

Then, fill the Fountain using both tanks to empty them.
Drain the Kitchen with Tank 2, then switch Tank 2 to the Reservoir and drain it to bring the level to 8. Refill Tank 1 by 2, then drain it again to finally bring the reservoir to level 6.

With the water at level 6, head back to the boat and interact with it to ride across to the hidden beach and reach the Safehouse. There, you’ll find key items like the Sanctum Key.

Head outside the manor, to the back of your campsite (where Simon’s tent is).

Look for a grove of white trees (they look like aspens).
In the middle of the grove, you’ll see a patch of dirt with two stones sitting on it.

Equip your shovel and dig right between those two stones. You’ll uncover the Conservatory floorplan — a powerful upgrade that lets you change the rarity of three random floorplans during future runs.

When you enter the Freezer room, your coins and gems will be frozen, meaning you can’t spend or collect more currency until they are thawed. The room also contains frozen loot and a locked ice chest, but everything is inaccessible at first.

Option 1: Use a Burning Glass or a Torch.
Burning Glass: Crafted in the Workshop by combining a Magnifying Glass and Metal Detector. Use this to melt the ice on items, the chest, and the frozen door.
Torch: Acquired from the Armory after completing the chess puzzle and gaining the Knight’s power. It works like the Burning Glass but doesn’t require crafting.

Raise the room temperature with the Furnace or Sauna.

Draft one of these rooms next to the Freezer. When you re-enter, the ice will begin to melt.

To start the Laboratory puzzle, you first need to power the room. Build a Boiler Room close to the Laboratory and make sure the connecting rooms have visible blue power conduits.

Once built, activate the Boiler Room and set the power direction to flow toward the Laboratory.

Inside the powered Laboratory, you’ll find two periodic tables: one standard and one mostly blank with numbers in certain spots.

Match the numbered spaces on the blank table to the correct element symbols on the full table. These symbols spell out a message: “Push three up after nine”.

Now go to the machine with levers in the same room. Flip lever 9 up first, then lever 3 up—in that exact order. This is the only correct sequence to trigger the puzzle completion.

If you’ve done everything right, a short cutscene will play, unlocking the Blackbridge Grotto permanently.

When laying out your rooms, place the Closed Exhibit so that one of its walled-off sides is connected to another room—yes, even though it looks like there’s no door there.

The adjacent room must have a door that faces the sealed side of the Closed Exhibit. It might look blocked, but that’s okay. It still works.

Enter the room next to the Closed Exhibit. Peek through the window—you should see a security panel that controls the exhibit.

The panel has three buttons: Reveal Tripwires (shows the laser grid), Lower Barrier (removes the rope around the Paper Crown), and Reset Alarm (disables security for 10 seconds). To disable the alarm, press the Lower Barrier button first, then quickly press Reset Alarm. You can press the Reveal Tripwires button if you want, but it’s not necessary.

After resetting the alarm, you have 10 seconds to run into the Closed Exhibit and grab the Paper Crown from the pedestal before the security system reactivates. If you fail, just repeat the steps—there’s no penalty.

The Paper Crown allows you to redraw floorplans if your first three choices don’t include a Red Room

Before anything else, you’ll need the Secret Garden Key. Its location changes every playthrough, but here are your best bets:
– Billiard Room’s dart puzzle
– Music Room
– The Locksmith

Once you’ve got the key, look for a locked door on the far left or right side of the mansion (columns 1 or 5).

Use a sledgehammer on the slightly broken wall to reveal a valve.

Turn this valve until its arrow is pointing west or east.

In the center, there’s a fountain with a wind vane, and nearby you’ll find two valves.

Turn both valves so the second and third arrows are pointing west—that’s toward the brick wall or moon statuette at the back of the garden, or east.

Pull the lever to unlock the western or eastern Antechamber door.

By having them all point south, you’ll get to see one of the Sigil combos for the Inner Sanctum.

To open Her Ladyship’s Diary in Blue Prince, start by getting a burning tool. You can craft a Burning Glass in the Workshop (combine a magnifying glass and a metal detector) or buy a Torch from the Armory after solving the chess puzzle and choosing the Knight’s power.

Next, wait for the Tomb to appear as your Outer Room. Inside the Tomb, light two sets of magic candles—one near the entrance and one in the back between two statues.

This reveals a secret passage. Go inside and move the photo on Lady Epsen’s coffin to find the Diary Key.

Now, wait for Her Ladyship’s Chamber to become available. It only appears on the west side of the house, facing south. Once you have it, open the diary.

Draft the Clocktower room and make your way to the top floor. You have to be there at exactly 1:30 PM in-game time.

Not sure what time it is in-game? Check any analog clock inside the mansion or on the tower’s exterior. Time moves slowly—about 5 in-game minutes pass per real-world hour.

Once you’re at the top of the Clocktower at the designated time, a cutscene will trigger, revealing a hidden passage leading to the puzzle room

Once you’re inside and the puzzle is triggered, you’ll see a large central clock and eight grandfather clocks lined up nearby. Around the room, you’ll also find a series of notes in either blue or red.

Here’s the trick: blue notes are truthful, and red notes are lies. The notes will reference different clock settings and try to mislead or guide you depending on their color. There’s also a poem on the desk that looks like a hint, but it’s intentionally misleading and best ignored.

The actual solution comes down to setting the eight grandfather clocks to very specific times. From left to right, the correct times are: 5:00, 5:08, 5:57, 6:00, 7:00, 8:00, 8:05, and 9:00.

Microchip 1:
Once you solve the Laboratory puzzle and unlock the Blackbridge Grotto, you’ll see the first Microchip already installed in the central pedestal.

Microchip 2:
Head to the Entrance Hall inside the mansion. Bring a Sledgehammer with you and break the vase on the left side as you walk in. The Microchip is hidden inside or beneath the shards.

Microchip 3:
Go outside the mansion through the West Gate and stop before crossing the small wooden bridge. To the right of the bridge, you’ll find a patch of grass. Use a Shovel to dig at this spot to reveal the final Microchip.

Once you have all three, return to the Grotto to fully activate the vault. Here, you’ll find the Throne Room blueprint.

Secret: Once you’ve found all three Microchips, bring them to the scorched sundial in the Apple Orchard.

Equip a fuse-lighting tool (like a Torch or Igniter) and interact with the sundial.

This reveals Microchip-shaped indentations. Place all three Microchips into the indentations.
Doing this unlocks a permanent Satellite Dish perk.

To start the Castle Puzzle, go to the Chess Chamber in the Underground and bring a Power Hammer. Smash the weakened wall to reveal a cipher with the letters C _ , A , S , T , L , E _. You’ll need to find clues around the mansion to fill in the blanks.

Return to the Chess Chamber and solve the Chess Puzzle twice. Once for the Rook power and once for the King. Get both powers in any order. This unlocks a hidden passage with Mora Jai color boxes (See solutions below).

Start a new run without picking up any items, gold, tools, or keys. Spend your gems by drafting rooms until you’re empty-handed. Draft an Observatory and activate the Southern Cross constellation by ending up with a star total like 5, 9, 13, 25, or 105.

Be in the Unknown chamber with the statues before 1:30 PM in-game, known as the Sacred Hour. Wait there until the clock strikes. At 1:30, the tomb rises, revealing a clock puzzle.

Set time to 01:09 and press the button. Move the minute hand 6 times clockwise (01:15) and press again

Rewind counter-clockwise until the hand lands on the word “EAST” (not the Roman numeral) and press once more. This reveals the Key of Aries.

Donate 30 coins to the Shrine to get the Monk Blessing and to open a sealed chest inside the Treasure Trove room to claim the Royal Scepter.

Make sure you’ve unlocked the Treasure Trove room. If this room isn’t available to you, make sure you’ve completed the Laboratory Puzzle and the Microchip Hunt.

Use the key here to open the chest and get the Royal Scepter. Note that you may not always get this chest.