PROVIDING HIGH-QUALITY GAMING ENTERTAINMENT FOR OVER 35 YEARS
We are a non-profit, completely volunteer organization serving the Western Pennsylvania region since 1986. COS is devoted to promoting the tabletop & live-action gaming hobby experience for our members.
UPCOMING EVENTS
COSCON XXXV
March 21-23, 2025
Crystal Room, Tesla Wellness Resort
139 Pittsburgh Rd, Butler, PA 16001
Registration Open Soon on Warhorn.net
Online Reg Closes & Discounts End Mar 7, 2025
SIBCON XXIX
September 19-21, 2025
Crystal Room, Tesla Wellness Resort
139 Pittsburgh Rd, Butler, PA 16001
Registration On Warhorn.net Opens July
Online Reg Closes & Discounts End Sep 6, 2025
LATEST NEWS
Sibcon 2024 – Thank You!
Just a heartfelt thanks for all the support we received at Sibcon this year. To say this was a hard one is a great understatement....
Read MoreSibcon XXVIII 2024 Venue Change
As some are aware, the General Butler Vagabonds Hall is unexpectedly closed until further notice. It is unavailable for Sibcon 2024. Fortunately, we were able...
Read MoreSIBCON XXVIII 2024 Registration Open!
Join us for the 28th annual COSCON gaming convention & expo Sep 20-22, 2024: Crystal RoomTesla Wellness Hotel & Resort (former Days Inn)139 Pittsburgh RoadButler, PA! That’s...
Read MoreHow Do You Like To Game?
Conventions
We run two annual 3-day gaming conventions in the western PA region. COSCON is our spring con and SIBCON runs in the fall. Great games, vendors, charity auctions, food and more!
Gaming
We love to grow the hobby! We coordinate and promote local monthly gaming days and store events, club picnics, movie nights, LARPs of all genres, and a variety of other social outlets!
Online
Join our growing online gaming community Facebook group. Whether console, PC, or virtual tabletops, you can connect with other gamers and stay in touch between in-person events!
Whether you’re looking for Organized Play events, member-driven living campaigns, or other tabletop roleplaying, miniature wargames, or new and classic board and card games, we have something we think you’ll enjoy!
Organized Play
- D&D Adventurers League
- Pathfinder Society
- Starfinder Society
Living Campaigns
- COSLarion Pathfinder 1E
- Kysie: Returned D&D 5E
General Gaming
- Independent TTRPGs
- Historical & Sci-Fi Miniatures
- Board & Card Games
- Open Gaming
JOIN THE COMMUNITY
If you are looking to enjoy local tabletop gaming fun with fellow gamers, then come join us!