Judging from the teaser trailer for Castle Dark 2018, the theme park is aiming for a scarier event this Halloween. Not that it wasn't scary before, but the event takes place at Castle Park in Riverside, which skews more toward families with children, so the annual Halloween overlay trod a fine line.
"Castle Dark" takes place on weekend evenings in October; there are kid-friendly Halloween attractions 3-5pm on Saturdays and Sundays. The park itself is open from noon to 10pm Fridays & Saturdays, till 9pm on Sundays. Attractions include the Ghost Manor free-roaming virtual reality experience and several walk-through mazes; Halloween activities are included with regular admission price. The address is 3500 Polk Street, Riverside, CA 92505.
Visit the Castle Park website for more info.