Games like Echoes in the Storm
Games like Echoes in the Storm include SOMA, Still Wakes the Deep, Mouthwashing, What Remains of Edith Finch, and Layers of Fear (2016). We matched them by the tags players give Echoes in the Storm on Steam (Walking Simulator, Psychological Horror, Investigation, Story Rich, and Gore): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Story Rich · Horror

Still Wakes the Deep
Shared: Psychological Horror · Walking Simulator · Gore

Mouthwashing
Shared: Psychological Horror · Story Rich · Walking Simulator

What Remains of Edith Finch
Shared: Walking Simulator · Story Rich · Atmospheric

Layers of Fear (2016)
Shared: Psychological Horror · Walking Simulator · Horror

Resident Evil 7 Biohazard
Shared: Gore · Horror · Psychological Horror

Firewatch
Shared: Walking Simulator · Story Rich · Atmospheric

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Story Rich · Atmospheric

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Story Rich · Psychological Horror

Outlast
Shared: Psychological Horror · Gore · Horror

Outlast 2
Shared: Psychological Horror · Gore · Horror

SILENT HILL 2
Shared: Psychological Horror · Story Rich · Horror

The Evil Within 2
Shared: Psychological Horror · Story Rich · Horror

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

MiSide
Shared: Psychological Horror · Story Rich · Horror

Resident Evil Village
Shared: Horror · Gore · Story Rich

Fran Bow
Shared: Psychological Horror · Story Rich · Horror

Tiny Bunny
Shared: Story Rich · Psychological Horror · Horror

SILENT HILL f
Shared: Psychological Horror · Story Rich · Horror

Little Nightmares II
Shared: Psychological Horror · Horror · Story Rich

ROUTINE
Shared: Psychological Horror · Atmospheric · Singleplayer

Blair Witch
Shared: Psychological Horror · Walking Simulator · Horror

The Medium
Shared: Psychological Horror · Story Rich · Horror

The Beast Inside
Shared: Psychological Horror · Horror · Story Rich