Games like Suspense: Madman's Dreams
Games like Suspense: Madman's Dreams include Layers of Fear (2016), What Remains of Edith Finch, Firewatch, SOMA, and Sally Face - Episode One. We matched them by the tags players give Suspense: Madman's Dreams on Steam (Adventure, Psychological Horror, Horror, Voice Control, and First-Person): closest matches first, and among equally close ones the better-known games.

Layers of Fear (2016)
Shared: Psychological Horror · Horror · First-Person

What Remains of Edith Finch
Shared: Story Rich · Adventure · First-Person

Firewatch
Shared: Adventure · Story Rich · First-Person

SOMA
Shared: Psychological Horror · Horror · Story Rich

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

MiSide
Shared: Psychological Horror · Horror · Story Rich

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

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

Outer Wilds
Shared: Adventure · Exploration · Story Rich

Little Nightmares II
Shared: Adventure · Horror · Psychological Horror

Little Nightmares
Shared: Adventure · Horror · Atmospheric

Layers of Fear
Shared: Psychological Horror · Horror · Adventure

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

Outlast
Shared: Horror · Psychological Horror · First-Person

Still Wakes the Deep
Shared: Psychological Horror · Horror · First-Person

Mouthwashing
Shared: Psychological Horror · Horror · Story Rich

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

Visage
Shared: Psychological Horror · Horror · Adventure

Fran Bow
Shared: Psychological Horror · Adventure · Horror

Outlast 2
Shared: Psychological Horror · Horror · First-Person

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

Blair Witch
Shared: Adventure · Horror · Psychological Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

Amnesia: Rebirth
Shared: First-Person · Adventure · Horror