Phantom Theater was a popular haunted dark ride at Kings Island, which opened on April 11, 1992, featuring a continuously moving vehicle system and immersive sets by R&R Creative Amusement Designs. This attraction continued a legacy of rides in the same building, replacing the Hanna-Barbera themed Enchanted Voyage (1972-1983) and Smurf's Enchanted Voyage (1984-1991).
After Phantom Theater closed in July 2002, its core ride system was re-themed twice: first as Scooby-Doo and the Haunted Castle (2003), adding interactive elements, and later as Boo Blasters on Boo Hill (2010). Excitingly, Kings Island announced in 2025 that the beloved haunted theater concept will return with a new attraction, Phantom Theater: Opening Nightmare, designed by Sally Dark Rides, bringing a modern twist to the classic experience.