Games like The Echo Paradox
Games like The Echo Paradox include SOMA, Outlast, Poppy Playtime, What Remains of Edith Finch, and Outlast 2. We matched them by the tags players give The Echo Paradox on Steam (Psychological Horror, Atmospheric, Horror, Aliens, and Singleplayer): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Outlast
Shared: Horror · Atmospheric · Psychological Horror

Poppy Playtime
Shared: Horror · Singleplayer · Psychological Horror

What Remains of Edith Finch
Shared: Atmospheric · Story Rich · Exploration

Outlast 2
Shared: Psychological Horror · Horror · Atmospheric

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

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

Resident Evil 7 Biohazard
Shared: Horror · Singleplayer · Atmospheric

Amnesia: A Machine For Pigs
Shared: Horror · Atmospheric · Psychological Horror

SILENT HILL 2
Shared: Psychological Horror · Horror · Atmospheric

Firewatch
Shared: Atmospheric · Story Rich · Singleplayer

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

Still Wakes the Deep
Shared: Psychological Horror · Horror · Atmospheric

MiSide
Shared: Psychological Horror · Horror · Story Rich

DREDGE
Shared: Exploration · Atmospheric · Psychological Horror

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

Darkwood
Shared: Horror · Psychological Horror · Atmospheric

Outer Wilds
Shared: Exploration · Atmospheric · Story Rich

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

Alien: Isolation
Shared: Horror · Atmospheric · Aliens

Little Nightmares II
Shared: Horror · Singleplayer · Atmospheric

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

Visage
Shared: Psychological Horror · Horror · Atmospheric

Call of Cthulhu®
Shared: Psychological Horror · Horror · Atmospheric