Games like Foghorns Drown
Games like Foghorns Drown include Mouthwashing, No, I'm not a Human, MiSide, Sally Face - Episode One, and Phasmophobia. We matched them by the tags players give Foghorns Drown on Steam (Indie, Psychological Horror, Story Rich, Mystery, and Horror): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Psychological Horror · Story Rich · Horror

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

MiSide
Shared: Psychological Horror · Story Rich · Horror

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

Phasmophobia
Shared: Psychological Horror · Horror · Mystery

Poppy Playtime
Shared: Horror · Psychological Horror · Mystery

What Remains of Edith Finch
Shared: Story Rich · Mystery · Indie

Firework
Shared: Indie · Horror · Psychological Horror

SOMA
Shared: Psychological Horror · Horror · Story Rich

Firewatch
Shared: Story Rich · Mystery · Indie

Detention
Shared: Indie · Psychological Horror · Horror

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

Demonologist
Shared: Psychological Horror · Horror · Surreal

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

Unheard - Voices of Crime
Shared: Mystery · Thriller · Story Rich

Outer Wilds
Shared: Story Rich · Mystery · Indie

Cube Escape Collection
Shared: Mystery · Psychological Horror · Horror

Garten of Banban
Shared: Psychological Horror · Horror · First-Person

Psalm 5:9-13
Shared: Psychological Horror · Indie · Horror

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

Subliminal
Shared: Psychological Horror · Mystery · Thriller

Notch - The Innocent LunA: Eclipsed SinnerS
Shared: Story Rich · Horror · Mystery

Fran Bow
Shared: Psychological Horror · Story Rich · Indie

Return of the Obra Dinn
Shared: Mystery · Story Rich · Indie