A collection of hidden object games, focusing around the sanitarium director Dr. Blackmore and his experiments into fears and phobias. The games were released by Big Fish Games, the company responsible for StraySoulsDollhouseStory and the ''VideoGame/VampireSaga'' trilogy, and created by ERS.

There are currently four games in the series: ''Green Hills Sanitarium'', ''Fears From Childhood'', ''Revenge Of Dr. Blackmore'' and ''Nightmare Dwellers''.

The series received critical acclaim; users of Gamezebo gave it rave reviews, it has 8.8 scores on Big Fish's website, and the first game has a 9.6 on Jayisgames [[note]]for reference, ''Half Life 2'' also received a 9.6 - from Website/IMDb, which has an identical rating system to Jayisgames.[[/note]]

!''Haunted Halls: Green Hills Sanitarium'' contains examples of:

* AndThenJohnWasAZombie: Inverted. [[spoiler:To stop Fitzpatrick from telling everyone about the fear machine, Blackmore manipulated his being a workaholic and hooked him up to the fear machine, even faking a medical chart.]]
* BeautifulAllAlong: How to free Katherine Lane, by creating a make-shift mirror and giving her a red dress.
* {{Claustrophobia}}: Richard Spike's fear, to the point that he's ''painted doors'' on all parts of the elevator he's trapped in.
* FeaturelessProtagonist: The main character's a girl. That's all we know about her.
* MindScrew: There's a body trapped in the floor, massive tentacles, a space probe, body parts used as keys for doors, a fire plan that involves suicide, and random Cthulhu imagery. Saimon's room is pretty freaky too.
* MoodWhiplash: Pointed by the main character. They find themselves in a beautiful field with a picnic...then they see a gallows in the background.
* RoomFullOfCrazy: Each room is associated with a character's fear.
* NamesTheSame: John Smith and John Ocean.
* SurrealHorror: See MindScrew. As noted in the description, this definitely worked out in its favour.
* WhyDidItHaveToBeSnakes: A lot of them.
** John Ocean: Hydrophobia.
** Sander Rivera: Arachnophobia.
** Katherine Lane: Disassociation [[note]]She's very critical of her appearance and tends to exaggerate her ugliness.[[/note]]
** Merry Chain: Resurfacing nightmares of evil toys.
** Reinold Crass: Loss of his stamp collection.
** Saimon Saimons: Paranoia of people watching him.
** Anthony Miller: Agoraphobia.
** Richard Spike: Claustrophobia.
** James Patrick Fitzpatrick: Failed calculations [[spoiler:and guilt.]]
** John Smith: Nuclear war.

And JustForFun, [[http://www.listal.com/list/dreamcasting-haunted-halls-green-hills here's some dreamcasting for a hypothetical movie.]] Warning! That link contains spoilers!

!''Haunted Halls: Fears From Childhood'' contains examples of:

* AdultFear: Pun aside, Dr. Blackmore is running his experiments on ''children'' that were kidnapped in their sleep.
* ArtifactTitle: You're no longer in the Haunted Halls.
* MuseumOfTheStrangeAndUnusual: One of the kids is trapped in one of these.
* SuddenlyVoiced: Characters get voiced starting with this game.
* WouldHurtAChild: See above.

!''Haunted Halls: Revenge Of Dr. Blackmore'' contains examples of:

* BittersweetEnding: The bonus chapter has [[spoiler: Tim and the main character ''finally'' reuniting and they rescue all of the people Dr. Blackmore kidnapped, but Dr. Blackmore still escapes.]]
* TheBully: Billy Bully, leader of a biker gang who used to pick on Blackmore as a kid.
* TheXOfY

!''Haunted Halls: Nightmare Dwellers'' contains examples of:

* AllJustADream: The ending of the game suggests this...until [[spoiler: you find that Dr. Blackmore's alive and is driving you off to who knows where.]] The bonus chapter does this ''again'' when [[spoiler: you wake up at the gates of the mansion and your partner wakes you up.]]
* GogglesDoSomethingUnusual: The main character uses special goggles to decode ancient runes.
* {{Macguffin}}: The Morpheus Skull