Games like The Whisperer
Games like The Whisperer include SOMA, What Remains of Edith Finch, Firewatch, Outer Wilds, and Sally Face - Episode One. We matched them by the tags players give The Whisperer on Steam (Adventure, Story Rich, Atmospheric, Horror, and Lovecraftian): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Atmospheric · Story Rich

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

Firewatch
Shared: Adventure · Story Rich · Atmospheric

Outer Wilds
Shared: Story Rich · Adventure · Exploration

Sally Face - Episode One
Shared: Story Rich · Horror · Adventure

Still Wakes the Deep
Shared: Horror · Lovecraftian · Story Rich

Dagon: by H. P. Lovecraft
Shared: Horror · Atmospheric · Lovecraftian

Layers of Fear (2016)
Shared: Horror · Atmospheric · Story Rich

The Room Two
Shared: Atmospheric · Adventure · Horror

Amnesia: The Dark Descent
Shared: Horror · Atmospheric · First-Person

Little Nightmares
Shared: Adventure · Atmospheric · Horror

Little Nightmares II
Shared: Adventure · Horror · Atmospheric

The Room 4: Old Sins
Shared: Adventure · Lovecraftian · Story Rich

Amnesia: A Machine For Pigs
Shared: Story Rich · Horror · Atmospheric

The Room Three
Shared: Adventure · Atmospheric · Mystery

Fran Bow
Shared: Story Rich · Adventure · Horror

Amnesia: Rebirth
Shared: Story Rich · First-Person · Adventure

Poppy Playtime
Shared: Horror · First-Person · Dark

The Room
Shared: Atmospheric · Adventure · Mystery

Outlast
Shared: Horror · Atmospheric · First-Person

DREDGE
Shared: Adventure · Lovecraftian · Exploration

Mouthwashing
Shared: Story Rich · Horror · Atmospheric

Detention
Shared: Horror · Atmospheric · Story Rich

Call of Cthulhu®
Shared: Horror · Adventure · Lovecraftian