Games like Improbability
Games like Improbability include A Plague Tale: Requiem, Lethal Company, SILENT HILL f, The Complex: Expedition, and Darkwood. We matched them by the tags players give Improbability on Steam (Psychedelic, Difficult, Exploration, Cinematic, and Realistic): closest matches first, and among equally close ones the better-known games.

A Plague Tale: Requiem
Shared: Cinematic · Exploration · Action-Adventure

Lethal Company
Shared: Horror · Exploration · Psychological Horror

SILENT HILL f
Shared: Horror · Psychological Horror · Exploration

The Complex: Expedition
Shared: Exploration · Horror · Realistic

Darkwood
Shared: Horror · Exploration · Psychological Horror

DARK SOULS™ III
Shared: Difficult · Exploration · Lore-Rich

SOMA
Shared: Horror · Exploration · Psychological Horror

Hollow Knight
Shared: Difficult · Exploration · Indie

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

Pacify
Shared: Horror · Exploration · Psychological Horror

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

SILENT HILL 2
Shared: Horror · Psychological Horror · Exploration

ROUTINE
Shared: Cinematic · Psychological Horror · Horror

Outer Wilds
Shared: Exploration · Adventure · Horror

The Escape: Together
Shared: Exploration · Horror · Psychedelic

Hollow Knight: Silksong
Shared: Difficult · Exploration · Indie

Cairn
Shared: Exploration · Difficult · Indie

Total Chaos
Shared: Horror · Exploration · Psychological Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · Exploration · Multiple Endings

Escape the Backrooms
Shared: Horror · Exploration · Psychological Horror

The Casting of Frank Stone™
Shared: Horror · Multiple Endings · Cinematic

SILENT HILL: Townfall
Shared: Horror · Exploration · Psychological Horror

Getting Over It with Bennett Foddy
Shared: Difficult · Horror · Psychological Horror

Subliminal
Shared: Realistic · Horror · Psychological Horror