Mansion Map
Where each room tends to spawn — East Wing, West Wing, central spine.
See the mapBlue Prince All Rooms List
Every room in the Blue Prince draft pool, with rarity, door count, placement cost, and effect. Use the in-page links to jump to a tier. The 46 total = 45 placeable + 1 hidden.
Legendary Rooms (Gold Border)
The rarest tier — usually 4–6 Gems to place, but among the strongest effects in the game.
| Room | Doors | Cost | Effect |
|---|---|---|---|
| Vault | 1 | — | Steel door; needs code 4558 + 1 Key. Drops deed paper, ~15 Gems. |
| Mine | 1 | — | Descend layers; layer 3 yields the Brass Key. See Mine layout. |
| Observatory | 1 | 4 Gems | Telescope puzzle; rewards the Architect's Diagram. |
| Locksmith | 2 | 3 Gems | Generates 2 Keys on entry. Stacks on each visit. |
| Trophy Room | 1 | 5 Gems | Rewards Marksman's Pin once per game; gated by Dartboard puzzle. |
| Antechamber | 2 | — | Unlocks after first Room 46. Contains the Master Key. |
Rare Rooms (Purple Border)
| Room | Doors | Cost | Effect |
|---|---|---|---|
| Library | 2 | 1 Gem | One Vault code letter. Books grant minor lore unlocks. |
| Workshop | 2 | 2 Gems | Crafting station — Telescope Lens, Pool Cue mods, etc. |
| Den | 2 | 1 Gem | Vault letter; sofa drops 2–4 Coins. |
| Office | 2 | 1 Gem | Vault letter on corkboard; ~5 Gems on desk. |
| Conservatory | 3 | 2 Gems | Restores +1 Step per turn spent inside. |
| Music Room | 2 | 2 Gems | Piano puzzle; rewards Coin payout. |
| Lab | 2 | 2 Gems | Converts 1 item into another. Requires recipe knowledge. |
Uncommon Rooms (Blue Border)
| Room | Doors | Cost | Effect |
|---|---|---|---|
| Pantry | 2 | — | +5 Steps on first entry. The single best Step source. |
| Kitchen | 2 | 1 Gem | +3 Steps per entry, up to +9 total. |
| Storeroom | 2 | — | Drops 3–5 Gems on first entry. |
| Strongroom | 1 | — | Doubles your Gem count when entered. Once per day. |
| Drawing Room | 3 | — | Contains the partial 45-room map. |
| Boiler Room | 1 | — | Valve puzzle; permanent Mine bonus on solve. |
| Billiard Room | 2 | 1 Gem | 3-shot puzzle; rewards 20 Coins + Pool Cue. |
| Parlor | 2 | 1 Gem | Riddle puzzle; opens a hidden corridor. |
Common Rooms (Gray Border)
| Room | Doors | Cost | Effect |
|---|---|---|---|
| Hallway | 2 | — | The connective tile. Always take when offered. |
| Foyer | 3 | — | 3-way junction. Useful for routing. |
| Closet | 1 | — | One drawer; small Coin or Key chance. |
| Bathroom | 1 | — | Filler. Skip unless desperate. |
| Bedroom | 2 | — | Sleep prompt on entry. Trap if drafted early. |
| Dining Room | 3 | 1 Gem | 3 doors plus a small Coin pile. |
| Reading Room | 2 | — | Lore notes; no resource impact. |
| Sitting Room | 2 | — | Sofa drops 1–2 Coins. |
Special / Hidden Rooms
- Room 46 — Hidden. Only accessible after meeting all three conditions.
- Antechamber — Unlocks after first Room 46 visit. Contains the Master Key.
- The Forgotten Wing — Three rooms behind the Parlor's hidden door. Triggers an alt ending.
- The Cellar (Mine layer 4) — Requires Brass Key + 12 Gems. Holds the Crown of Mt. Holly for the true ending.
All Rooms FAQ
How many rooms total? 45 placeable + 1 hidden Room 46 = 46. Antechamber adds to the pool post-Room-46.
Rarest room? Legendary tier (gold border): Vault, Mine, Observatory, Locksmith, Trophy Room, Antechamber.
Mandatory rooms for Room 46? Mine (Brass Key), Workshop (Telescope Lens), Vault, Observatory, and one of Den/Library/Office.
Best Step rooms? Pantry (+5 first entry), Kitchen (+3 per entry up to 9), Conservatory (+1 per turn inside).
Related Guides
Beginner's Guide
How drafting works and which rooms to take first.
Read basicsItems List
Brass Key, Marksman's Pin, Master Key — every persistent item.
Item indexAntechamber
The post-Room-46 room and how to use the Master Key.
Antechamber guide