2024 Hotel

Hello! We have another major announcement: the hotel for Mysterium 2024! Read on for more info.


Mysterium 2024 will be held at the Alt Hotel Quartier Dix30 in Brossard. Single and double queen rooms are available in our block, which can be booked directly through the hotel. The deadline for booking is June 11. After that date, the hotel may release unsold rooms to the general public. For information on the hotel, pricing, parking, and booking, see our Location page.

Last Call for Pins

Pin submissions are still open until March 31. If you want to get a design in you still have a week! See our Submissions page for details.
Event submissions are still open until May 12 as well.

February Prompt Winners

For February’s topic of “Ice”, we had Harley with https://archiveofourown.org/works/53631289. The visual winner was redwoodrroad’s image of Rime:

Note: for the offseason, we are switching our prompts to bi-monthly, so March’s topic of “Memories” will still be up through the end of April.

More to announce soon, including registration and special guests!

Annacat and Dan,
Mysterium 2024 co-chairs

Event Submissions

Greetings! We don’t have any big announcements just yet (although we should have information on a hotel Soon™) but we are opening event submissions for this year’s Mysterium.

Event Submissions

Have a cool design you’d like to show off at Mysterium? An activity you think would be fun for everyone? Event submissions are open until May 12. See our Submissions page for details.

Last Call for T-Shirts

Final reminder: T-shirt designs are due February 25. The designers of the two selected entries will each receive a free t-shirt, and you do not have to attend Mysterium to submit a design. See our Submissions page for details.

January Prompt Winners

For January’s topic of “Horizons”, redwoodrroad once again took home the visual art prize with this image of Gehn:

The written winner this month was Talashar with “The Lighthouse”

We’ll have more to announce, including hotel information and con registration, before too long!

Annacat and Dan,
Mysterium 2024 co-chairs

Mysterium Dates

Hi all. We do indeed have dates for Mysterium 2024! Read on for details.

Mysterium 2024 Dates

Mysterium 2024 will be held July 12-14. We expect to have hotel information in the near future, but these dates are now official. Since this is a little earlier than usual, the deadline for Writing and Artwork table submissions is now June 30 instead of July 12.


To give people ample time to plan, we’ve decided to set a COVID policy now, at the same time we’re announcing dates for the convention. Details are available on our COVID page, but in summary:
  • Masks are required
  • Vaccines are not required

December Prompt Winners

For December’s topic of “Refuge”, redwoodrroad submitted this image of Gehn’s refuge on K’veer:

The written winner this month was Talashar, with “Dream Island” https://archiveofourown.org/works/52466749.

T-Shirt Reminder

Reminder that t-shirt submissions are open for a few more weeks, until February 25. Submit your designs! See our Submissions page for more information.

We will have quite a bit more to announce soon, including event submissions and hotel information. Hope to see you all in Montreal!

Annacat and Dan,
Mysterium 2024 co-chairs

A December Update

Hello. We really were hoping to announce dates in this post. However, we ran into a major issue with the weekend we were aiming for. This is probably a disappointing revelation, but we’re trying to minimize the cost of attending while still considering the accessibility and convenience of a location.


We are still weighing various trade-offs for dates and costs. To gauge where attendees stand, we’ve put together a brief survey that will help us make a decision. Please fill it out – it should only take a minute or two: https://forms.gle/uRVPNF2y1wvWHm7b9.

AI Content Policy

We made a slight update to our policies: we have added this line to the Submissions policy:
Submissions generated by Artificial Intelligence tools are not permitted. AI may be used for brainstorming but the final product must be your own original work. This applies to all submission types including both visual and written works.
This applies to any content that adheres to our submissions policy, including t-shirts, pins, and Discord community prompts. The full policy is available on our website.

November Prompt

There were a few ties for the month of November and the topic of “Found Family”. Normally I’d have the tie-breaker vote but due to the obvious conflict of interest, we’re just going to highlight everyone’s submissions instead of announcing winners.
redwoodrroad once again submitted a fantastic piece of artwork, this time featuring Yeesha’s found family:
We also had four stories this month:
Remember: today is the last day for December’s topic of “Refuge”.

We are still negotiating with hotels and hope to be able to announce dates soon. In the meantime, happy new year!

Annacat and Dan
Mysterium 2024 co-chairs

Policy Updates

Happy (belated) Thanksgiving! We have a couple quick items to announce. No, we do not have dates for Mysterium yet but are close and expect to announce that before the end of the year.

Policy Updates

We made a few changes to the Mysterium policies. Note the following:
  • We received some complaints about heckling and shouting out during presentations. While audience reactions and cheering are fine, repeatedly interrupting presenters is not.
  • Attempts to circumvent our refund policies via charge dispute may result in a permanent ban from future events.
The full set of policies is available on the Policies page of our website.

October Prompt Winners

We have our two winners for October’s community prompt topic of “Noir”. First, the visual winner angelmyst with this photo collage:


“There it stood, in all its splendor, pulling me to its craggy feet. Not just a mountain, The mountain. The mountain of my dreams…calling, ever calling. My childhood games were all compassed in its majesty. I had to see what it held.
Home, cozy and dark, it enveloped me in its depths, and held me breathless. Echos from my past played on the vaulted ceiling.
I shall never leave.
I can never leave.
I am its prisoner.”

Next, Talashar was selected as the written winner with “The Hidden Way”.
There are still a few days to submit entries for November’s topic of “Found Family”.

That’s it for this one. Again, we expect to have dates very soon and should be following up with another post in December.

Mysterium 2024 co-chairs
Annacat and Dan