THIS IS CONVENTION PAGE FOR CHAOSIUM CON IN ANN ARBOR MI THAT WILL BE HELD APRIL 2025
The stars will again be right, as Chaosium Con returns in 2025, April 10 - 13.
Get your ticket here for a weekend dripping with cosmic horror, essential runes, swashbuckling adventure, and chivalrous quests!
Chaosium Con will feature a plethora of gaming sessions, LARPs, VIP game sessions with Chaosium creators, seminars and panel discussions, a Chaosium Collectibles Auction, a Great Market featuring all manner of goods produced by Chaosium and our licensee family for purchase, and much more!
The venue is the same as last year - the Ann Arbor Marriott Ypsilanti at the Eaglecrest Golf Resort and Convention Centre, 17 miles west of Detroit Metro Airport (DTW), Michigan.
Badges on sale NOW
Hotel Group Rate
Book here!
GM Badges
GMs who submit 12 hours of approved events will be assigned a GM Badge. Badges will be assigned prior to event registration so that GMs can enjoy being a player, too! Once event submissions open, submit 12 hours of events. Once your events are approved, we'll issue you a badge!
See more in the NEWS section of this website.
Volunteer Badges
Chaosium Con volunteers who are scheduled for a minimum of 12 hours will be assigned a Volunteer Badge.
We hope you can join us! — all the team at Chaosium.
Vendor Hall Hours
Friday 10am-4pm
Saturday 10am-4pm
Sunday 10am-2pm
Merchandise
Pick up your official Chaosium Con 2025 T-shirt on Redbubble!
Registration Desk Hours (badge pick up)
Thursday 1pm-8pm
Friday 8am-6pm
Saturday 8am-6p
Sunday 10a-12pm
Event Submission OPENS November 30, 2024
Event Submission CLOSES March 29, 2025
Special Note: This is a different process from 2024! There will be no preview window. Events will continue to be added AFTER Event Registration opens.
Event Registration OPENS March 1st, 2025 @ 1P EST:
Chaosium Mixer Event
Thursday 7P-until
Come meet the tribe Thursday night to kick off the convention! Hors d'oeuvres will be provided! Grab a beverage from the cash bar. Hang out, lounge, chat, and connect with the Chaosium Team!
Theme: 50th anniversary “Worlds of Wonder” party
Chaosium celebrates 50 Years! Come celebrate in cosplay! Dress as your favorite Call of Cthulhu, RuneQuest, Pendragon, 7th Sea, or other character. Enjoy creative expression from everything to the Roaring 20s villain, a Bronze Age hero, a swashbuckling pirate, and more!
Chaosium Auction and Collectables Shop
Friday, April 11, 2025 from 4P EST - 6P EST
Refund/Credit Policy
We are offering full refunds until February 28, 2025. After that date there will be no refunds under any circumstances.
If you are unsure about being able to either afford or attend our show, please do not buy a badge to our show. However, we acknowledge that things happen. So, if you do buy a badge and/or special event tickets and you have to cancel after February 28, 2025, we will credit your chaosium.com account with those amounts. The only limitation on this is that the request for a credit must be received by us by April 1st, 2025. After that, only special event ticket returns will be honored in person at the show. There will be no badge returns after this point. Again, if you are unsure that you can either afford or attend our show, please do not buy a badge.
Ann Arbor, Michigan
Ann Arbor Marriott Ypsilanti at Eagle Crest
1275 S Huron St, Ypsilanti, MI 48197, USA
(734) 487-2000
Room block for Chaosium Con at the venue hotel is now OPEN!
Click here!