Blue Prince: Room Drafting, Resources, and the Mystery of Mt. Holly Explained
Blue Prince turns a 45-room mansion into a daily card-drafting puzzle: pick one of three rooms behind every door, manage steps, keys, gems and coins, and hunt for a secret 46th room before the manor resets overnight.
Blue Prince is a first-person puzzle-adventure from the small studio Dogubomb, published by Raw Fury, that turns an inherited mansion into a card game you walk through. Every morning the 45-room manor of Mt. Holly reshuffles itself, and you draft a new floor plan one door at a time while hunting for a room that, officially, doesn't exist. Since launching on PC, PlayStation 5 and Xbox Series X|S on April 10, 2025, it has become one of the most decorated independent games of the decade, picking up major design awards and a Metacritic score in the low-to-mid 90s. This guide explains how the game's core systems actually work — room drafting, resource management, the permanent Blueprint, and the mystery wrapped around all of it — without walking you through specific room solutions you'll want to discover yourself.
1. What Is Blue Prince?
You play as Simon P. Jones, who inherits the Mt. Holly Estate from his great-uncle, Herbert S. Sinclair. The will is specific and strange: the estate only officially has 45 rooms, but it also stipulates a 46th room that must be found. Every in-game day starts the same way, in the fixed Entrance Hall, and ends when you run out of steps or reach that elusive 46th room. If you don't make it, the mansion rearranges itself overnight and you try again the next morning.
It's built on Unreal Engine with a hand-inked art style, and it blends genres deliberately: part roguelike deck-builder, part escape room, part mystery narrative. Dogubomb director Tonda Ros designed, wrote and led most of the project himself before Raw Fury came on to publish it. The game released on Steam, PlayStation 5 and Xbox Series X|S in April 2025, added macOS support via Steam on September 29, 2025, and arrived on Nintendo Switch 2 on March 3, 2026. On Steam it's listed under the Adventure, Indie and Strategy genres and carries a Metacritic score of 92 on PC.
2. How Room Drafting Builds Mt. Holly
The manor is laid out as a fixed grid, nine rows by five columns — 45 tiles in total. Only two of those tiles are permanent: the Entrance Hall where you start, and the Antechamber, the room you're ultimately trying to reach. Everything else is empty space until you open a door into it.
When you walk up to an unexplored doorway, the game doesn't just load a pre-built room. It offers you a choice of three possible floor plans — a draft — and whichever one you pick gets permanently slotted into that tile for the rest of the day. Pick a Bedroom over a Storeroom or a Hallway, and that's what occupies the space; the other two options are gone. Doors that don't physically line up with a neighboring room become dead, unusable exits, which is part of what makes route-planning the real skill in Blue Prince.
Some drafted rooms are dead ends with nothing but flavor text; others are crossroads that open up multiple new paths; a handful need to be unlocked with a key or paid for with gems before they'll even appear as an option. Rooms higher up the grid, further from the Entrance Hall, tend to hold tougher puzzles and better rewards, which pushes you to balance a direct sprint toward the Antechamber against detours that make the rest of the run easier.
Why Route Planning Matters
Because every draft is permanent for the day, an early greedy choice can wall off a more useful room later, or burn resources you needed for a room three tiles further on. Experienced players tend to prioritize rooms that generate more steps, keys or coins early, then save gem-cost rooms and locked doors for when they have the means to afford them.
3. The Four Resources You're Always Juggling
Blue Prince runs on four currencies, all visible on the HUD at all times:
- Steps: You start each day with 50. Moving from one room to an adjacent one costs one step. Eating food and resting in bedrooms restores steps, and when you hit zero, the day ends wherever you are.
- Keys: Found in drafted rooms or as draft rewards, keys open locked doors that wouldn't otherwise be accessible.
- Gems: The premium currency of drafting itself — certain high-value floor plans can only be selected if you pay gems for them.
- Coins: Spent on food (which restores steps) and tools found in shops and storerooms around the manor.
Rooms can also contain tools and puzzle objects that don't fit neatly into those four categories — a magnifying glass for reading faded documents closely, drafting pencils, and other instruments tied to the manor's puzzles.
Running out of any one resource doesn't necessarily end your day the way running out of steps does, but it will close off whole branches of the mansion until you can restock, which is why experienced players treat Mt. Holly less like a maze and more like a resource-management puzzle wearing a mansion's clothes.
4. What Carries Over: Permanent Upgrades and the Blueprint
Most of what you collect in a run — keys, gems, coins, drafted rooms — disappears when the day ends and the house resets. But Blue Prince is explicit about not being a pure roguelike: certain items and discoveries persist from one day to the next, including permanent upgrades that grant you extra steps, gems or coins right from the start of a new run. You can check what you've permanently unlocked through the game's Blueprint menu, which tracks the manor's layout and your progress across days rather than resetting with everything else.
This is the mechanism that keeps Blue Prince from feeling punishing the way a strict roguelike would. Early runs are about learning the manor's room types and finding whatever permanent boosts you can; later runs lean on that accumulated progress to push further into the grid and finally reach room 46.
5. The Mystery at the Heart of the Manor
Blue Prince isn't just a drafting puzzle — it's wrapped around a mystery you piece together from notes, portraits, and hidden rooms as you explore. The story is set on a fictional planet called Mora, within the realm of Fenn Aries. Simon's mother, a children's author named Mary Jones who wrote under the pen name Marion Marigold, disappeared after joining a resistance movement and stealing the ruby crown of Orinda Aries; its rubies have since been replaced with sapphires. Reaching the throne room and piecing together what happened to her and the crown is tied directly to the game's deeper ending, beyond simply finding room 46.
Critics specifically praised how gradually Blue Prince reveals its secrets — the game rarely tells you outright that a system exists, and large parts of its community-driven puzzle solving were still ongoing as of late 2025. That's also why this guide stops short of spelling out specific solutions: Dogubomb built the game around the experience of noticing patterns yourself.
6. Tips for Surviving Your First Few Days
Learn Room Types Before You Rush Room 46
Your first several days are far more valuable for learning what room types exist and what they do than for racing toward the Antechamber. A slower, more exploratory early run tends to pay off once you understand which rooms are worth drafting on sight.
Prioritize Resource-Generating Rooms Early
Rooms that hand you extra steps, coins or keys compound over the course of a day. Drafting one of those before a flashier but resource-neutral room usually extends how far you can get before your steps run out.
Keep Notes on What You Read
Because the narrative is delivered through documents scattered across different rooms, and the manor's layout changes every day, it's easy to find half of a clue one run and the other half three runs later. Jotting down names, numbers and locations as you find them (on paper, not just in your head) pays off far more than it would in most games.
Don't Treat a Failed Day as a Loss
Because permanent upgrades persist through the Blueprint even when a day ends, a run that doesn't reach room 46 still moves you forward. Prioritizing a permanent upgrade over a short-term resource boost is frequently the better trade.
7. Critical Reception and Awards
Blue Prince launched to some of the strongest reviews of any independent game in recent years. It holds a Metacritic score of 92 on PC, 90 on Xbox Series X|S and 85 on PlayStation 5, with roughly 95% of critics recommending it on OpenCritic. Outlets including Eurogamer and The Guardian gave it full five-star reviews.
The awards followed accordingly. At the 29th D.I.C.E. Awards, it won Outstanding Achievement for an Independent Game and Outstanding Achievement in Game Design. The Game Developers Choice Awards gave it Best Design and the Innovation Award. It also won Best Indie Game at the Golden Joystick Awards, Game of the Year and Innovation at The Indie Game Awards, Best Indie Game at the New York Game Awards, and Game Design at the British Academy Games Awards — alongside further nominations at The Game Awards and elsewhere.
8. Where to Play Blue Prince
Blue Prince is available now on Windows and macOS via Steam ($29.99), on PlayStation 5, on Xbox Series X|S (including Xbox Game Pass at launch), and on Nintendo Switch 2 as of March 3, 2026. A June 2025 update brought a wave of post-launch content for players who'd already found room 46, and a 2026 accessibility update added colorblind support and control remapping on top of the base release.
Quick Recap
- Mt. Holly is a 9x5 grid of 45 rooms; only the Entrance Hall and Antechamber are fixed, everything else is drafted one door at a time.
- You manage four resources — steps, keys, gems and coins — and running out of steps ends your day.
- Permanent upgrades tracked in the Blueprint menu carry over between days, so a failed run toward room 46 still makes future runs easier.
- The story, centered on Simon Jones and his missing mother Marion Marigold, is told through documents you'll need to actively read and remember.
- It's available on PC, PS5, Xbox Series X|S, Mac, and Nintendo Switch 2, carrying a 92 Metacritic score on PC and a string of Game of the Year-caliber design awards.
If Mt. Holly's room-by-room puzzle solving appeals to you, walkthroughs.net also covers Escape Simulator 2's room-building toolkit, the clue-driven cases in our Mystery Detective Adventure walkthrough, and the hidden-object investigations of Hidden Escape: Murder Mystery 2. You can browse every guide on the site in our full walkthrough archive.