Games like The Dark Tones: Loss
Games like The Dark Tones: Loss include SOMA, What Remains of Edith Finch, MiSide, Firewatch, and Layers of Fear (2016). We matched them by the tags players give The Dark Tones: Loss on Steam (Dark, First-Person, Psychological Horror, Adventure, and Story Rich): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Dark · Horror

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

MiSide
Shared: Psychological Horror · Story Rich · First-Person

Firewatch
Shared: Adventure · Story Rich · First-Person

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

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

Mouthwashing
Shared: Psychological Horror · Story Rich · Horror

Poppy Playtime
Shared: First-Person · Singleplayer · Dark

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

Little Nightmares II
Shared: Adventure · Dark · Horror

Outlast
Shared: First-Person · Psychological Horror · Horror

Visage
Shared: Psychological Horror · Dark · First-Person

ROUTINE
Shared: Psychological Horror · Dark · Singleplayer

Little Nightmares
Shared: Adventure · Dark · Horror

Blair Witch
Shared: Psychological Horror · Adventure · First-Person

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

Amnesia: A Machine For Pigs
Shared: First-Person · Story Rich · Horror

Fears to Fathom - Ironbark Lookout
Shared: Psychological Horror · Horror · First-Person

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

Fran Bow
Shared: Psychological Horror · Story Rich · Dark

Buckshot Roulette
Shared: Dark · First-Person · Horror

Summer of '58
Shared: Psychological Horror · First-Person · Horror

Welcome to Kowloon
Shared: Psychological Horror · Adventure · First-Person

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