Games like The Hidden Ones
Games like The Hidden Ones include Phasmophobia, Escape the Backrooms, Inside the Backrooms, Dead by Daylight, and The Past Within. We matched them by the tags players give The Hidden Ones on Steam (Horror, Online Co-Op, RPG, Multiplayer, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Online Co-Op · Multiplayer

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

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

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

The Past Within
Shared: Online Co-Op · Horror · Co-op

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

It Takes Two
Shared: Multiplayer · Online Co-Op · Co-op

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

Scarlet Idol
Shared: Multiplayer · Online Co-Op · Co-op

Pacify
Shared: Horror · Online Co-Op · Multiplayer

DEVOUR
Shared: Horror · Online Co-Op · Multiplayer

Demonologist
Shared: Horror · Online Co-Op · Multiplayer

Labyrinthine
Shared: Horror · Online Co-Op · Multiplayer

We Were Here
Shared: Horror · Co-op · Multiplayer

Little Nightmares III
Shared: Horror · Co-op · Multiplayer

We Were Here Forever
Shared: Online Co-Op · Multiplayer · Puzzle

PEAK
Shared: Online Co-Op · Multiplayer · Co-op

Lethal Company
Shared: Horror · Online Co-Op · Co-op

Baldur's Gate 3
Shared: RPG · Story Rich · Online Co-Op

We Were Here Together
Shared: Online Co-Op · Puzzle · Co-op

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

Little Nightmares II
Shared: Horror · Psychological Horror · Puzzle

We Were Here Too
Shared: Online Co-Op · Horror · Multiplayer

Shift At Midnight
Shared: Horror · Online Co-Op · Multiplayer