Games like Escape from Nightmare School
Games like Escape from Nightmare School include Poppy Playtime, Five Nights at Freddy's: Security Breach, Lethal Company, Outlast, and The Forest. We matched them by the tags players give Escape from Nightmare School on Steam (Horror, Survival Horror, Exploration, Hidden Object, and Dark): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Survival Horror · Singleplayer

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · Singleplayer

Lethal Company
Shared: Horror · Survival Horror · Exploration

Outlast
Shared: Horror · Survival Horror · Singleplayer

The Forest
Shared: Horror · Survival Horror · Exploration

Escape the Backrooms
Shared: Horror · Survival Horror · Exploration

SOMA
Shared: Horror · Survival Horror · Dark

Subnautica 2
Shared: Horror · Exploration · Survival Horror

Darkwood
Shared: Horror · Survival Horror · Dark

Subnautica
Shared: Horror · Exploration · Singleplayer

Sons Of The Forest
Shared: Survival Horror · Horror · Exploration

Choo-Choo Charles
Shared: Survival Horror · Horror · Singleplayer

Five Nights at Freddy's
Shared: Horror · Survival Horror · Singleplayer

Outlast 2
Shared: Horror · Survival Horror · Singleplayer

Bendy and the Dark Revival
Shared: Horror · Survival Horror · Singleplayer

Subnautica: Below Zero
Shared: Horror · Singleplayer · Exploration

Resident Evil Requiem
Shared: Survival Horror · Horror · Singleplayer

Resident Evil Village
Shared: Horror · Survival Horror · Singleplayer

Pacify
Shared: Horror · Survival Horror · Exploration

Ultimate Custom Night
Shared: Horror · Survival Horror · Singleplayer

The Outlast Trials
Shared: Horror · Survival Horror · PvE

Resident Evil 4
Shared: Horror · Survival Horror · Singleplayer

Slender: The Arrival
Shared: Horror · Survival Horror · Dark

Inside the Backrooms
Shared: Horror · Survival Horror · Exploration