Games like Malevolent Madness
Games like Malevolent Madness include SOMA, Mouthwashing, Lethal Company, Outer Wilds, and SILENT HILL 2. We matched them by the tags players give Malevolent Madness on Steam (Horror, Detective, Atmospheric, Adventure, and Psychological): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Mouthwashing
Shared: Horror · Atmospheric · Psychological Horror

Lethal Company
Shared: Horror · Psychological Horror · Atmospheric

Outer Wilds
Shared: Adventure · Atmospheric · Exploration

SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric

Raging Loop
Shared: Adventure · Detective · Psychological Horror

Firewatch
Shared: Atmospheric · Adventure · Horror

The Cat Lady
Shared: Horror · Adventure · Psychological Horror

Sally Face - Episode One
Shared: Horror · Psychological Horror · Adventure

Little Nightmares
Shared: Horror · Atmospheric · Adventure

Detention
Shared: Horror · Atmospheric · Psychological Horror

Fears to Fathom - Ironbark Lookout
Shared: Horror · Atmospheric · Psychological Horror

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

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

[Chillas Art] The Convenience Store
Shared: Horror · Adventure · Psychological Horror

Fran Bow
Shared: Horror · Psychological Horror · Adventure

SILENT HILL f
Shared: Horror · Psychological Horror · Psychological

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Atmospheric

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

Little Nightmares II
Shared: Horror · Adventure · Atmospheric

Outlast
Shared: Horror · Atmospheric · Psychological Horror

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Exploration

Observation
Shared: Adventure · Horror · Atmospheric

DISTRAINT: Deluxe Edition
Shared: Horror · Psychological Horror · Indie