If you’re looking for a challenging escape room with creative puzzles, “Billionaire’s Den” at Escape Room Mystery is a great pick—especially if your group enjoys math puzzles and clever game elements.

Here’s our full review!

Basic Info

Escape Room Name: Billionaire’s Den
Location: King of Prussia, PA
Company: Escape Room Mystery
Difficulty Level: Challenging

My Difficulty rating: 8/10
Time Limit: 60 minutes
Clues: Unlimited
Room Type: puzzles, logic, and physical locks with codes

Did we escape?  Yes, our kind game master gave us an extra 2 minutes since we were close to escaping!

Theme & Storyline

“Billionaire’s Den” drops you into the private lair of a mysterious billionaire filled with secrets, puzzles, and hidden surprises.

Immersion Rating: ⭐⭐⭐⭐⭐ 5/5

What Worked Well:

• Beautiful, immersive decorations
• A fun board-game element built into the puzzles
• Creative ideas we hadn’t seen in other escape rooms

The theme felt polished and interesting, and the board game component was especially memorable.

Puzzle Quality

Puzzle Difficulty: Hard

This room definitely leans toward experienced escape room players.

Highlights:

• Unique puzzles not seen before
• Lots of math-based challenges (don’t worry just multiplication and division)
• Clever integration of physical and logic puzzles

We appreciated how creative the puzzles were, but be prepared—there a bit of math involved. Thankfully, we were allowed to use our phones for calculations.

Puzzle Rating: ⭐⭐⭐⭐ 4/5

Team Experience

Best Team Size: 4–6 players

This room really benefits from teamwork because of the difficulty level and math components.

Memorable Moments:

• Figuring out how the board game element worked
• Working through tricky calculations together

However, there were a few small frustrations:

• No instructions were given for how to play the board games. 
• The keypad locks appeared as a security system and not noticed as a lock at first.

Because of this, we spent extra time figuring out mechanics instead of solving puzzles.

Game Master & Hints

Hint System: Unlimited clues

The staff was friendly and helpful, and booking the room was very easy. We appreciated how smoothly everything started.

We enjoyed having Abi as our game master.  

One challenge:
Frequent time-reminder interruptions made it hard to stay focused on puzzles.  The recording had the billionaire talking which was distracting. 

A quick intro explaining the different keypad and lock systems would be helpful for new players.  

Set Design & Atmosphere

Set Design Rating: ⭐⭐⭐⭐ 4/5

What We Loved:

• Immersive decorations
• Comfortable waiting area
• Fun, themed props

One Issue:
The room was dimly lit at times during the game, which made it hard to read clues or continue working at times.

Price & Value

Cost per person: $32.00

Was it worth it? Yes

The creativity and challenge level made this a worthwhile experience—especially for puzzle lovers.

Pros & Cons

Pros

• Challenging and creative puzzles
• Unique board game incorporation
• Immersive decorations
• Friendly staff
• Easy booking and check-in
• Nice waiting area

Cons

• Time reminders interrupted focus
• Dim lighting in parts of the game
• No instructions for board game elements
• Keypad systems not explained

Final Rating

Overall Rating: ⭐⭐⭐⭐ 4.5 / 5

This room is perfect for experienced escape room fans or groups that love math and logic challenges. Beginners may still enjoy it, but expect a steep challenge!

Tips for Future Players

• Bring someone comfortable with math puzzles
• Ask about lock systems beforehand
• Don’t hesitate to use the unlimited clues
• Bring reading glasses if dim lighting is tough

Have you tried an escape room at Escape Room Mystery or another in the King of Prussia area? Which one should we try next?