Things get creepy this AUGUST at NIGHTMARE WEEKEND! Galaxycon's ghosts and goblins gather together to present 3 Days of Scary Celebrities, Petrifying Parties, Villainous Vendors, Ghastly Gaming, Creepy Cosplay Contests, and Fearful Fun for EVERYONE! Join us August 29-31, 2025 for a frightfully good time at Nightmare Weekend Cleveland at the Huntington Convention Center of Cleveland.