Games like Escape the Playground
Games like Escape the Playground include Lethal Company, Escape the Backrooms, Phasmophobia, Dead by Daylight, and Pacify. We matched them by the tags players give Escape the Playground on Steam (Online Co-Op, Multiplayer, Horror, Psychological Horror, and Survival Horror): closest matches first, and among equally close ones the better-known games.

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

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

Phasmophobia
Shared: Online Co-Op · Horror · Multiplayer

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

Pacify
Shared: Online Co-Op · Horror · Multiplayer

DEVOUR
Shared: Online Co-Op · Horror · Multiplayer

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

The Outlast Trials
Shared: Co-op · Multiplayer · Horror

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

Inside the Backrooms
Shared: Multiplayer · Horror · Co-op

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

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

BIGFOOT
Shared: Multiplayer · Online Co-Op · Horror

Outlast
Shared: Horror · Survival Horror · First-Person

Left 4 Dead 2
Shared: Co-op · Multiplayer · Online Co-Op

In Silence
Shared: Online Co-Op · Multiplayer · Horror

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

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

Lunch Lady
Shared: Online Co-Op · Horror · Multiplayer

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

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

Demonologist
Shared: Online Co-Op · Multiplayer · Horror

Dying Light
Shared: Online Co-Op · Horror · Survival Horror

Subnautica 2
Shared: Multiplayer · Horror · Co-op