The Mystery Agency: The Balthazar Stone

By | November 23, 2020

by The Mystery Agency (website)

£40.00

📦play at home

Can you unlock the ancient chest, find the Balthazar Stone and break the ancient curse?

Join Elsa Winslow on her journey to Sharktooth Island. To solve the mystery, you must unlock an ancient treasure chest, find Balthazar’s Stone and break its ancient curse.

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Overall rating

Rated between 3 and 4.5 out of 5

based on ratings from 15 users
combined with 1 pro review

Your review

Player reviews

Brandon experienced rated this:Rated between 3 and 3 out of 5
Played: 14 Jun 2025 Team size: 2 Outcome: Successful escape!
beautifulquite easy
Suzanntelope rated this:Rated between 3 and 3 out of 5
Team size: 1
beautifulquite easy
lareve expert rated this:Rated between 4.5 and 4.5 out of 5
Played: 17 May 2024 Team size: 2 Time taken: 1:33
Colin Webb rated this:Rated between 3 and 3 out of 5
Played: 16 Aug 2023 Team size: 2 Outcome: Successful escape!
beautifulmissing partsquite easy

Well made and it was nice to see some good components. Unfortunately we were missing one part and other parts weren't attached as they should have been. This resulted in us eventually having to go to the online hints. Overall it is good, but felt too easy and not as satisfying as other games of the genre that we have played. 

Wesley Mead expert rated this:Rated between 4 and 4 out of 5
Played: 4 Feb 2023 Team size: 2 Time taken: 60m Outcome: Successful escape!
beautiful
MissLoopyLou93 experienced rated this:Rated between 4 and 4 out of 5
Played: 9 Jan 2022 Team size: 2 Time taken: 71:36 Outcome: Successful escape!
beautifulstory-drivenquite difficult
Absolutely stunning game. The build quality was excellent and so much different to other games I’ve played. 
smudgepuss rated this:Rated between 2.5 and 2.5 out of 5
Team size: 3
quality materialillogicalquite easy

We approached this a little unsure of how it would end up.  The promo material left us fairly certain that it would have a decent build quality, but we were unsure of how the puzzles and story would play out: a decent challenge for puzzlers, or a name famous in a different realm cashing in on the escape room bandwagon?

As we expected, the materials were all generally good quality, although on unlocking the stone at the end, we realised that this bit of the box wasn't glued and we could have just slid the wood aside without troubling the padlock!

When it came to the puzzles, we found that some puzzle elements weren't coherent with the story's timeline, which lead to us not realising that we hadn't used some things fully.  The overall story didn't quite hang together.

We've only done 2 of the 3 so far - do this one before The Ghost in The Attic as it's the weaker of the two.

jakea256 expert rated this:Rated between 4 and 4 out of 5
stairs expert rated this:Rated between 3 and 3 out of 5
Played: 3 May 2021 Team size: 3 Time taken: 2:00:00 Outcome: Successful escape!
family friendlybroken techunoriginal

The Balthazar Stone is nearly a great game, but unfortunately it gets lets down by a series of minor niggles in nearly every aspect so it's hard not to leave feeling frustrated, both as a player and on behalf of the creators that they didn't deliver the potential that the game clearly has.

Let's start with the good: the game centres around a physical box. Even though it's laser-cut plywood, it's a good size and weight and and it's beautifully-decorated. It feels interesting and satisfying to interact with. As you play through the game, you'll find various smaller artefacts - all above average quality, that would make nice souvenir pieces if you're the sort of person to display trophies of your game conquests, say. The puzzles are relatively solid, and there's an online hint system if you get stuck. The game is totally non-destructive, and there's also an excellently-clear guide as to how to reset the game and pass it on to someone else.

But...

- There's a lack of clear signposting at one point near the start, which led us to spend 10 minutes trying to solve a puzzle without yet having been given all the materials required to do so. We then eventually decided to give up and consult the hints site, only to discover that the first online "clue" you can reveal is actually required to proceed in the game!

- One of the puzzles is either broken, or contains red herrings - it's a bit hard to say. But it certainly made us waste time solving things that turned out to have no relevance to the game.

- A part of the game requires internet access, but it's very thin webpage content, and does not make nearly as good use of the medium compared to similar games from Society of Curiosities or The Detective Society. The simplistic presentation of the online components also does not match the quality of the physical presentation of the box itself.

- Even though the story and puzzles were generally well-executed, there was nothing we hadn't seen before, and everything very much sticks to the standards expected of a "haunted pirate box"-esque game. That's not a huge problem, but don't expect any surprises.

- But the biggest problem: the final puzzle has a catastrophic mechanical failure, which led to us reaching the end of the game after only solving about half of the puzzles. Frustratingly, it seems that this was known about and has been reported by several  reviewers who received early copies of the game (who were then sent replacement fixed boxes), but KS orders were still sent out using the defective boxes, and despite contacting the company I've not been offered a replacement.

It's such a shame, as this could have been one of the top at-home games, but instead we left with a sour taste. I'm awaiting delivery of the next two in the series, and am hopeful the designers will learn from their mistakes... fingers crossed!

Anonymous rated this:Rated between 5 and 5 out of 5
Showing most recent only - see all ratings & reviews

Reviews by escape room review sites

This was an amazing debut by The Mystery Agency, founded by Henry Lewis of the wonderful Mischief Theatre (for even more fun check out their plays, DVDs and TV shows!)


We kickstarted the full set of three, so they worked out cheaper than they are now available for, but I feel that as long as you fully immerse yourself in the story and take the puzzles and adventure slowly, then this is great value for money.


There were some known issues with the inside of the chest for earlier adopters, such as our box structure mentioned earlier, with broken internal walls or locks that had come away from their shackles. Be sure to take your exploration of the physical elements slowly and don’t use these as an opportunity to cheat! There are also some logistics issues for the deliveries but considering this is a new venture for a small team new to the market, its initial popularity and what with Brexit, Covid and other barriers to deal with, this is not surprising and some patience may be needed, but it is very much worth the wait.


We can’t wait to see what other mischief we get up to in the other two titles from this group, and from the website, it looks like a fourth is already in the planning!

You are sent the box by The Mystery Agency, hoping your puzzling skills might be able to help in uncovering the mystery that surrounds the Balthazar Stone. After all, the professor who had it last went crazy trying to decipher the riddles and open the case. He even tried *whispering* brute forcing the lock, but alas! The Balthazar’s Stone keeps it’s secrets.


I loved The Balthazar Stone. It had all the right elements of mystery and discovery that I want in a good at-home escape game. The game materials are great quality and feel like real artifacts.

The puzzles are really well designed, making me feel like a real armchair treasure hunter. The seamless attention to detail that I’ve come to love about Mischief Theatre is clearly evident here.

I’d recommend this game for anyone who’s a fan of Society of Curiosities and is hungry for more. It’s less challenging than the Society of Curiosities games, so I’d say it lends itself more towards a casual or family game night.

See also