Welcome to the perfect guide on the Clocktower Blue Prince puzzle, an essential mystery in the acclaimed roguelike puzzle-adventure Blue Prince that, once cracked, can skyrocket your gameplay and your site’s engagement.

What is the Clocktower Puzzle in Blue Prince?
In Blue Prince (April 10, 2025), the Clocktower is a rare, draftable room. Choose it in the Drafting Studio and it may appear during your run, revealing a hidden puzzle when you’re inside at 1:30 PM in-game time (about 27 real minutes after an 8 AM start).
Why This Puzzle Matters and Why You Need to Solve It
- Unlock the Sanctum Key: Successfully solving the puzzle grants a Sanctum Key, crucial for deeper exploration and progression.
- Boost your run’s value: This puzzle isn’t just for lore, it enhances your run efficiency and allows key exploration paths.
- Engaging mystery for users: As a blog topic, it taps into frustrated or curious players seeking solutions, increasing dwell time and improving CTR when structured smartly.
Step-by-Step: Solving the Clocktower Blue Prince Puzzle
1. Be Prepared, Draft the Clocktower Blueprint
Use the Drafting Studio to unlock the Clocktower. Once selected, you’ll likely encounter it if drafting strategically.
2. Time It Right, 1:30 PM In-Game
Time passes quickly, 5 real minutes ≈ 1 in-game hour, so waiting ~27 minutes from 8 AM is key. You must wait inside the room before 1:30 to trigger access.
3. Interpret the Clues, Blueprint of Rules
Inside the secret chamber, eight grandfather clocks await. Each memo offers clues, some true (“blue”), some false (“red”), and may include hand-written notes which are actually true. The rules include:
- Blue memos = valid clues (e.g., times must differ; no 1/2/3/4; five on-the-hour times; neighbors with 7; reversed digits).
- Red memos = false, unless they’re handwritten, then they count as true.
4. The Winning Sequence
Set the clock times left to right as:
5:00 → 5:08 → 5:57 → 6:00 → 7:00 → 8:00 → 8:05 → 9:00
This arrangement meets all the valid blue clues and respects the inverted handwritten red note.
Final Recap: Clocktower Blue Prince Quick Reference
Step | Action |
---|---|
1 | Draft the Clocktower via Drafting Studio |
2 | Wait inside until in-game 1:30 PM |
3 | Enter secret chamber formed by clocks |
4 | Read all blue and handwritten notes (“blue clues”) carefully |
5 | Set clocks to: 5:00 → 5:08 → 5:57 → 6:00 → 7:00 → 8:00 → 8:05 → 9:00 |
6 | Watch the drawer open and collect your Sanctum Key |
Final Thoughts
The Clocktower Blue Prince puzzle can seem daunting at first, but once the correct sequence is clear, it transforms into one of the game’s most satisfying challenges. With this guide, you’ll crack the puzzle and claim the secret key that drives your adventure deeper into Blue Prince’s mysteries.