Join us at COSine for a weekend of science fiction, fantasy, and horror! Our special guests include Martha Wells, Kyle Crutcher, Drs. Louise & James Gunderson, Connie Willis and Courtney Willis.
Note: Due to the move to a new hotel, we’ve had to raise our prices slightly for 2023. COSine is a nonprofit convention, so this is purely to cover costs. We are grateful for your understanding!
Early Bird Rate: Because we didn’t sell memberships to COSine 2023 at COSine 2022 (since we weren’t sure we’d find a hotel!) we are giving people a chance to register at the “next year” rate you would have got if you could have signed up at COSine 2022. This rate will be available until the end of March.
If you are a dealer, artist or participant, please click here.
Day passes available at the door!
January 20, 2023 - January 22, 2023
2:00 pm - 4:00 pm
Venue: Embassy Suites by Hilton
7290 Commerce Center Dr, Colorado Springs, CO 80919