If your Blue Prince plan calls for a Rare Rooms, this is your shortlist: 23 entries that all share that Rarity. The table shows what each one actually does, so you can pick the one that fills the slot you need.
The full Rooms list
| Name | Rarity | Gem Cost | Notes |
|---|---|---|---|
| Attic | Rare | 3 | High above the mansion in its lofty perch, Mt. Holly’s Attic provides curious explorers with a cache of dusty |
| Bookshop | Rare | — | Books for sale |
| Chamber of Mirrors | Rare | 0 | Reflections of reflections, this confusing room can sometimes prove disorienting to the wayward guest. However, upon |
| Closed Exhibit | Rare | — | A painstakingly produced accurate reproduction of one of the so-called “Closed” Exhibits of the Fenn Aries Royal Museum. |
| Drafting Studio | Rare | 2 | As an architect and engineer, it was not uncommon to find your great uncle spending the better part of his weekends |
| Freezer | Rare | 0 | Dedicated to deep freeze and cold storage, Mt. Holly’s freezer is an insulated space kept almost as frigid as the snowy |
| Furnace | Rare | — | The main centralized heat source for the estate. You may find yourself starting to sweat after drafting this room. |
| Gallery | Rare | — | A small chamber dedicated to the exhibition of art, ideal for showcasing smaller series and collections. Before his |
| Gift Shop | Rare | — | Thank you for visiting Mount Holly. We hope you enjoyed your stay here! |
| Her Ladyship’s Chamber | Rare | — | Tucked quietly away in the west wing of Mount Holly is the decorative bedroom of your grandmother, Lady Epsen. The |
| Laundry Room | Rare | 1 | A standard hub of domestic toil complete with washers, dryers and a state of the art steampowered unit leveraging the |
| Locker Room | Rare | 1 | This poolside Locker Room is of course not always poolside, but it is much more convenient for guests when it is; and |
| Master Bedroom | Rare | 2 | H. S. Sinclair’s own room. Though perhaps soon you may consider it your own. |
| Morning Room | Rare | — | The best thing to go with breakfast is a morning newspaper and a coffee. |
| Room 8 | Rare | 0 | Unsurprisingly, Key 8 unlocked a door leading to a familiar looking room, a cryptic room that had been previewed in the |
| Rotunda | Rare | 3 | A circular chamber with a domed ceiling adorned with an array of mechanical gears. In the center of the room, a stone |
| Secret Garden | Rare | — | A floorplan so secretive it had been removed from the drafting pool to avoid anyone unwanted accidentally stumbling |
| Showroom | Rare | 2 | An array of jewelry display cabinets showcasing an impressive selection of high-priced items, each unique and one of a |
| The Foundation | Rare | — | The cornerstone of the house, unvarying and unchanging, The Foundation is one of the only constants in the estate on |
| Throne Room | Rare | 5 | The former seat of power of Orinda Aries before the current era and the rise of the red banner. |
| Trophy Room | Rare | 5 | The polished brass of the treasured laurels filling the trophy cases of this room reveal the pride their owner must |
| Vault | Rare | 3 | A secure onsite depository fitted with steel walls and numbered lockers. This fortified strongroom holds a good portion |
| Weight Room | Rare | — | An exercise room outfitted with weightlifting equipment. A good workout session here will wipe you out and leave you |
The numbers at a glance
| Metric | Value |
|---|---|
| Total Rooms tracked | 23 |
| With a written description | 22 |
| Without a written description | 1 |
| Rare — Rarity | 23 |
| Average Gem Cost | 2.08 |
| Max Gem Cost | 5 |
| Min Gem Cost | 0 |
What the Rooms data tells us
If you only remember one thing: the rarity split is the fastest way to narrow 23 Rooms down. Rare is the largest group at 23 entries, so start your comparison there before looking at anything else. Note: 1 of the 23 entries have no written description in the source data — for those you are reading stats only, so trust the numbers, not assumptions.
By the numbers, the standouts are Throne Room and Trophy Room with the highest Gem Cost (5). They set the ceiling for the whole Rooms set.
Entries worth a closer look
Gallery — A small chamber dedicated to the exhibition of art, ideal for showcasing smaller series and collections. Before his passing, H.S. Sinclair personally The Foundation — The cornerstone of the house, unvarying and unchanging, The Foundation is one of the only constants in the estate on which you can truly rely. This Rotunda — A circular chamber with a domed ceiling adorned with an array of mechanical gears. In the center of the room, a stone podium serves as a central Laundry Room — A standard hub of domestic toil complete with washers, dryers and a state of the art steampowered unit leveraging the newly installed steam ducts Drafting Studio — As an architect and engineer, it was not uncommon to find your great uncle spending the better part of his weekends here, at a drafting table with Secret Garden — A floorplan so secretive it had been removed from the drafting pool to avoid anyone unwanted accidentally stumbling upon it. This secluded garden Vault — A secure onsite depository fitted with steel walls and numbered lockers. This fortified strongroom holds a good portion of the Sinclair fortune
As the source data describes one entry: “High above the mansion in its lofty perch, Mt. Holly’s Attic provides curious explorers with a cache of dusty keepsakes, trinkets, and clues from a long-forgotten past.”