Fright by Night As dusk swallows daylight, the fright begins when hundreds of zombies are released to haunt the park. Watch your back as you wander into our four free themed scare zones, where ghoulish creatures are waiting to jump out of the darkness. Enjoy new and favorite haunted walk-through mazes (additional fee required) when doors open at night. There’s live monstertainment, strolling zombies and much more! Don’t forget to ride your favorite coaster in the dark for an all- new bone-chilling experience. Fright by night is not recommended for children under 12. Fright Fest is back at Six Flags Discovery Kingdom to unleash five weekends of frightful fun. Please check the website to make sure that you read and abide by all the rules before you attend.