Games like Phantom Hysteria
Games like Phantom Hysteria include Phasmophobia, Lethal Company, Escape the Backrooms, Zort, and Backrooms: Escape Together. We matched them by the tags players give Phantom Hysteria on Steam (Horror, Psychological Horror, Online Co-Op, Investigation, and 3D): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Online Co-Op · Psychological Horror

Lethal Company
Shared: Horror · Online Co-Op · First-Person

Escape the Backrooms
Shared: Horror · Online Co-Op · Psychological Horror

Zort
Shared: Horror · Online Co-Op · Psychological Horror

Backrooms: Escape Together
Shared: Horror · Online Co-Op · Psychological Horror

Labyrinthine
Shared: Horror · Online Co-Op · Psychological Horror

Pacify
Shared: Horror · Online Co-Op · Psychological Horror

Dead by Daylight
Shared: Horror · Online Co-Op · Psychological Horror

Demonologist
Shared: Horror · Online Co-Op · Psychological Horror

R.E.P.O.
Shared: Horror · Online Co-Op · 3D

Content Warning
Shared: Horror · Online Co-Op · Psychological Horror

Ghost Exile
Shared: Horror · Online Co-Op · Psychological Horror

Species: Unknown
Shared: Horror · Online Co-Op · First-Person

Nuclear Nightmare
Shared: Horror · Online Co-Op · Psychological Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Online Co-Op

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

DEVOUR
Shared: Horror · Online Co-Op · Psychological Horror

BIGFOOT
Shared: Horror · Online Co-Op · Psychological Horror

Outlast
Shared: Horror · Psychological Horror · First-Person

PANICORE
Shared: Horror · Online Co-Op · Psychological Horror

PEAK
Shared: Online Co-Op · First-Person · 3D

MiSide
Shared: Psychological Horror · Horror · First-Person

KLETKA
Shared: Horror · Online Co-Op · First-Person

Shift At Midnight
Shared: Horror · Online Co-Op · 3D