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Rated 5.0 out of 5
21 Reviews
Regular price
$274.99 USD

Currently there is a 14 day lead time before new orders are shipped.

What happens when you buy a ticket to a play that can never be seen? 
What calamity arises when you invoke the name of the Yellow King?
What will become of a world that only you can save?

Discover these terrible truths in one of the most immersive, ambitious, tactile, and terrifying experiences we have ever been a part of. 

In partnership with Phantom of Truth Productions, The Mysterious Package Company presents a one-night-only performance of “The King in Yellow” — a play so boundless it could change the fabric of existence. And there’s only one seat left. 

Should you claim that last ticket, you’ll receive far more than a night at the theatre. Instead, you’ll get the fearsome adventure of a lifetime — one spanning centuries, crossing universes, testing the bounds of sanity... 

It will, in fact, be all you can do to withstand the ochre madness — at least long enough to save us all, or serve us up to HASTUR.  


  • 2 mailing experience
  • The narrative of this Experience is centred around solving puzzles


First arrives a ticket, addressed to you, for a performance that has already happened. You may know that “The King in Yellow” is a forbidden demonic play that makes the audience go mad. Or you may not. But as you begin to follow up, your frustration at missing the play in question turns to relief as it seems something beastly and fatal occurred during the performance. There is an ongoing investigation, and apparently you are a person of interest. You receive strange emails to this effect that pull you deeper into the darkest of rabbit holes. Then, all of a sudden, a large wooden crate arrives. 

The crate is full of strange things: relics, rune scrolls, star-charts, a statue, a dossier of papers streaked with blood, and some even curiouser items. It will be up to you to decipher these objects — to figure out what they mean and how they fit together. But there is much more at stake here than simply solving a mystery. Amidst ancient rituals to be performed, intergalactic codes to be broken, and portals to be opened (both online and among the stars) the deepest and deadliest of decisions must be made: Will you bring HASTUR forth, or will you hold him far? Will you save the world, or help destroy it? 

The choice is yours in one of the most intense, disturbing, and elaborate adventures you’ll ever experience. We can only pray you’ll make the right decision. 


HASTUR is an immersive experience with a complex storyline and numerous puzzle aspects. The narrative involves demonic cults, murder, rituals, and suicide. It is not suitable for children, or people with a sensitive constitution. Your recipient will love it if they are fans of horror, the dark arts, demonology, the work of Robert Chambers and H.P. Lovecraft, the cult of Carcosa, Cthulhu, or the King in Yellow. 


  • Digital components (throughout)
  • Ticket Treasure site
  • Phantom of Truth site
  • SRDA electronic form

Mailing 1

  • Play ticket
  • Letter from Ticket Treasure

Mailing 1.5

  • Online electronic form experience

Mailing 2

  • Playbill
  • Research Dossier
  • Statue
  • Star map
  • Ritual bowl
  • 5 Cylinder Seals
  • Wood-framed clay tablet
  • Glass vial
  • Complex dial mechanic
  • Instructional scroll
  • 5 Illuminated pages
average rating 5.0 out of 5
Based on 21 reviews
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Customer photos and videos
21 Reviews
Rated 5 out of 5
Review posted

Summoning Hastur during the global Quarantine

Foremost I would love to thank Vaughn for his help over the last few months answering a bunch of questions i had and trying to time the shipments so that they could arrive as close to my boyfriends birthday as possible.

He even went above and beyond to help out to make sure the second shipment got here quicker than originally intended because I was really worried the borders would be closing since we are currently dealing with a global pandemic and the state we live in is quickly closing lots of things.

Onto the product. I bought this as a birthday present for my boyfriend since he is entering a new decade and wanted to do something really special for him since you only turn 30 once. The first mailing came addressed to him, and it managed to tie in really well with local events because there have been a lot of cancellations of concerts and plays in the area, so for him to get a ticket to something he missed because of the crazyness of the pandemic really made this feel real to him.

The little touches that MPC put in not just with the wax seal and beautiful cardstock of the initial ticket, but the level of detail they put on the website was so much fun.

The product itself when it came in was so neat. All of the paperwork that came with the box was so cool to rifle through, a lot of care went into making the antique newspapers really look and feel antique.

The physical pieces like the cylinders and the Hastur figure were absolutely beautiful.

When my boyfriend opened…

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Rated 5 out of 5
Review posted


A fantastic, memorable experience. Beautifully crafted, aesthetically pleasing, and delivered in a timely fashion. A strong narrative ties together the myriad artifacts and online components, and the puzzles are complex enough to slow progression through the experience, but without being too challenging to overcome. Thoroughly enjoyable, and now on display in my home office!

21 out of 10 - would learn unknowable truths again.

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Rated 5 out of 5
Review posted

Great Puzzles

Really enjoyed the mystery and very satisfying once I figured out the puzzles

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Rated 5 out of 5
Review posted

Most Excellent

Been so much fun especially while self isolation during corona crisis. Had a blast and the tools and everything in the box are amazing. Extremely well written and produced. Will definitely try another one of these.

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Rated 5 out of 5
Review posted

Incredible experience, even better customer service

I am a Lovecraft nut, it is a serious problem with me. When I discovered MPC I was almost jumping for joy. I immediately bought both the Cthulhu crate and the Hastur experience ...the props alone make it worth the money, the Hastur puzzle is the cherry on top. However I ordered them a bit too quickly, I didn’t stop and read through the shipping FAQ and sent them to a PO Box. An experience went missing. Luckily the Concierge Vaughn was there for me, and he deserves a raise for dealing with my anxious and upset self. He was a perfect professional, one of the few times I enjoyed interacting with customer service (he also had to deal with the Bartlett Post Office...give him a bonus too, it is not easy dealing with them without losing your temper). My missing crate was found! Finally, to the Curator, you should consider making a Nyarlathotep crate (experience or long as a statue is included). :)

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