A night at Halloween Horror Nights can involve a lot of waiting for only a few minutes inside each haunted house. That makes it especially noticeable when guests finally walk inside and discover that part of the experience isn't working.
That's already becoming a complaint at Universal Studios Hollywood.
Halloween Horror Nights opened in Hollywood on September 3, and visitors have reported several unusual technical problems. From screens that apparently weren't working to an effect behaving in a completely unintended way, some early guests aren't happy with what they encountered.
One visitor even called the experience a “total rip-off,” showing just how frustrating these problems can become when money and long waits are involved.
Halloween Horror Nights Is Now Running on Both Coasts
Universal's annual Halloween event has officially returned to both of its U.S. destinations.
Universal Orlando Resort started Halloween Horror Nights on August 28, while Universal Studios Hollywood joined the fun on September 3. Both versions continue on select nights through November 1.
Halloween Horror Nights gives Universal a dramatically different atmosphere after dark. Haunted houses become the main attractions, while scare zones, performers, entertainment, and fog take over other areas.
The houses combine recognizable entertainment franchises with original concepts. Universal uses scenery, lighting, sound, screens, animatronics, scare actors, and special effects to create environments guests can physically walk through.
Universal Studios Hollywood has eight haunted houses this year, plus Terror Tram starring Art the Clown.
Keeping all of those experiences operating as intended requires plenty of technology. During Hollywood's early days, guests had already reported instances in which that technology apparently didn't cooperate.
Ozzy's House Had a Very Unplanned Display
Ozzy Osbourne: Prince of Darkness is among the major additions to Hollywood's 2026 lineup.
The haunted house draws on Ozzy Osbourne's life, music, and decades-long solo career for its scenes and effects.
One reported problem, however, delivered something considerably less frightening.
A television helps create imagery inside a window along the exterior of the house. According to one visitor, that screen wasn't displaying what Universal intended.
Instead, guests could reportedly see the Roku TV default screen.
Stranger Things 5 reportedly experienced issues of its own.
The house pulls guests into environments inspired by the fifth and final season, including Hawkins National Laboratory and other familiar locations.
Fans reported that televisions inside the experience weren't functioning properly. Another guest encountered an issue involving a Will Byers mannequin that reportedly began shaking far more aggressively than intended.
Rather than adding to the horror, the malfunction apparently turned the moment into an unintentionally funny scene.
OZZY presented by Roku 💀 #hhn #halloweenhorrornights pic.twitter.com/xvShq8KaBh
— TLEV Media (@TLEVmedia) September 4, 2026
Technical Glitches Hit Differently After a Long Wait
Those problems might sound relatively minor until the cost and time involved in Halloween Horror Nights enter the equation.
Guests need a separate admission to attend the event. Universal sells General Admission tickets alongside upgraded options such as Universal Express and the R.I.P. Tour.
Popular houses can also attract significant crowds.
Visitors might spend a sizable part of their evening waiting before getting their chance to walk through a house. The experience lasts only a few minutes, so that a broken effect can detract from a meaningful portion of that walkthrough.
That's where frustration can grow quickly.
Guests paid to attend, potentially traveled specifically for Halloween Horror Nights, and then waited for the experience. When something important doesn't function properly, they don't get another chance at that scene without going through the house again.
Some visitors have called for refunds, while one guest labeled the experience a “total rip-off.”
Technical difficulties aren't unusual for complicated theme park experiences. Hollywood's Halloween Horror Nights season has just started as well, meaning Universal has plenty of opportunities to correct early issues.
Wow the stranger things house at HHN is so immersive pic.twitter.com/y8zlHaq8pL
— maggie 🫀 (@maggiekingdom) September 4, 2026
Eight Haunted Houses Are Open in Hollywood
Guests still have a substantial lineup to explore during Halloween Horror Nights 2026.
Universal Studios Hollywood's eight haunted houses this season are:
- Sinners
- Stranger Things 5
- Hellraiser
- Evil Dead Burn
- Ozzy Osbourne: Prince of Darkness
- Killer Klowns From Outer Space
- Dead, Deader, Deadest
- KILLceañera: Music by SLASH
Terror Tram starring Art the Clown expands the lineup beyond those traditional houses.
The experience takes guests onto Universal's backlot for a Christmas-themed horror encounter centered around Art.
Between eight houses, Terror Tram, scare zones, performers, and other entertainment, Universal has many individual show elements running throughout every event night.
Poor will …. pic.twitter.com/e7rp9tbVtU
— Theme Park Wizard (@PermitWizard) September 4, 2026
Hollywood's Horror Season Is Only Getting Started
Opening-week technical trouble doesn't guarantee these problems will continue.
Universal Studios Hollywood's event began September 3 and runs through November 1, leaving nearly two months for the park to address issues as they appear.
Still, the early complaints demonstrate how important even small details become inside a haunted house.
Halloween Horror Nights works best when guests forget about the technology behind the scares. Screens become windows into another world, mannequins become characters, and carefully timed effects help complete each scene.
Once that technology becomes noticeable for the wrong reason, the illusion disappears.
Guests expect Halloween Horror Nights to make them scream. They probably don't expect a Roku screen to be responsible.
