Fright Fest changes Six Flags Over Texas after sundown with haunted mazes, roaming scare actors, themed zones, live entertainment, seasonal food, and nighttime rides beneath the park lights. Daytime park hours offer a lighter atmosphere, but the evening event is aimed at older thrill seekers and is not recommended for children under 13. Regular admission covers the park, shows, rides, and scare zones, while premium haunted mazes require a separate Haunted Attractions Pass.