Games like Quiet House Massacre
Games like Quiet House Massacre include Mouthwashing, Outlast, Lost in Vivo, Outlast 2, and Poppy Playtime. We matched them by the tags players give Quiet House Massacre on Steam (Psychological Horror, Horror, Indie, First-Person, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

Outlast
Shared: Horror · First-Person · Psychological Horror

Lost in Vivo
Shared: Psychological Horror · Horror · Indie

Outlast 2
Shared: Psychological Horror · Horror · First-Person

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

No, I'm not a Human
Shared: Psychological Horror · Horror · Indie

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Psychological Horror

Resident Evil Village
Shared: Horror · First-Person · Survival Horror

Visage
Shared: Psychological Horror · Horror · First-Person

Lethal Company
Shared: Horror · First-Person · Psychological Horror

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Five Nights at Freddy's
Shared: Horror · Psychological Horror · Indie

Blair Witch
Shared: Horror · Psychological Horror · Indie

Layers of Fear (2016)
Shared: Psychological Horror · Horror · Atmospheric

Ready or Not
Shared: Horror · FPS · Psychological Horror

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Atmospheric

Buckshot Roulette
Shared: Horror · First-Person · Indie

Slender: The Arrival
Shared: Horror · Indie · First-Person

The Beast Inside
Shared: Horror · First-Person · Psychological Horror

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

SILENT HILL 2
Shared: Psychological Horror · Horror · Atmospheric

The Outlast Trials
Shared: Horror · Psychological Horror · First-Person

METRO 2033 Redux
Shared: Horror · Atmospheric · FPS

IMSCARED
Shared: Horror · Psychological Horror · Indie