The Complete Blue Prince Guide

From your first draft to the final door of Room 46 — walkthroughs, puzzle solutions, and strategy from players who have cleared the mansion.

Start with the Basics

Guides & Walkthroughs

Start Here

Beginner's Guide

Learn the draft mechanic, manage Steps / Gems / Keys / Coins, and survive your first runs without burning resources.

Read the guide
Main Goal

How to Reach Room 46

The full path to Mt. Holly's hidden room — required items, route order, and the mistakes that send you back to bed.

See the route
Puzzles

All Major Puzzles Solved

Boiler Room, Vault, Billiard Room, Parlor, Dartboard, Constellation — every answer in one place.

Open solutions
Strategy

Best Rooms to Draft

Tier-ranked rooms with notes on synergies, when to skip, and which combos guarantee a strong day.

Jump to tier list
Resources

Resource Economy

How Gems generate, why Keys are scarcer than they look, and the room that pays you back twice.

Read more
Endgame

Hidden Rooms & Secrets

Rooms most players never see — the Observatory chain, secret passages, and what's behind the East Wing.

Find them all

Long-tail Guides

Reference

Mansion Map

Visual 9×5 grid layout, East/West Wing, and Mine layers.

See the map
Reference

All Rooms List

Every room in the draft pool — rarity, doors, cost, effect.

Room database
Reference

Items List

Brass Key, Master Key, Crown — every item and where to find it.

Item index
Strategy

Day 1 Strategy

What to do on your first day. Reconnaissance over progress.

Plan day 1
Endgame

All Endings

Standard, Forgotten Wing, and True Ending routes.

See endings
Puzzle

Vault Code 4558

Why DOOR maps to 4558 and where each letter is hidden.

See the derivation

Quick Tips

Always Draft the Pantry Early

Pantry gives Steps back when entered. Place it on a high-traffic path between the Entrance Hall and the East Wing.

Don't Waste Keys on Wooden Doors

Wooden doors unlock by other means. Save Keys for steel doors and chests with gem multipliers.

Read Every Note

Notes left in rooms aren't flavor. Many contain the exact codes you'll need for the Vault and Safe.

The Bedroom Is Optional

Going to bed ends the day — but only triggers when you choose. Don't draft a Bedroom too early or you'll be tempted to quit a strong run.

Track the Constellation

The night sky changes each day. Note the visible stars on day 1 — they're the key to the Observatory puzzle later.

Save the Lab for Mid-Run

The Lab converts items but consumes a turn. Use it when you have a clear conversion target, not as a panic option.

Featured Mansion Map

Mt. Holly mansion floor plan Mt. Holly Floor Plan (9 × 5) Entrance Room 46 Vault West Wing East Wing

Frequently Asked Questions

Is Blue Prince a roguelike? Yes — daily randomized room drafting with knowledge-based meta-progression.
How long to beat Blue Prince? 15–25 hours for Room 46; 30–40 hours for the True Ending.
What is Room 46? The 46th hidden room in Mt. Holly. Reaching it is the main goal.
Is the Vault code the same every run? Yes — 4558, fixed.
How many endings are there? Three: Standard, Forgotten Wing, and True Ending.
Is there a map? 9×5 grid with Entrance fixed at bottom-center. See the visual map.

Recent Updates

May 14, 2026
Big content expansion: 7 new long-tail guides (Mansion Map, All Rooms, Items, Day 1, Endings, Antechamber, Vault Code). Added 12 SVG diagrams across the site.
May 11, 2026
Added complete Constellation puzzle solution with star map. Updated Room 46 route after recent patch.
May 4, 2026
New beginner guide section on Gem economy. Added best draft openers for solo runs.
Apr 28, 2026
Site launched. All major puzzles documented, six core rooms ranked.