Games like Diastone: Memories
Games like Diastone: Memories include Little Nightmares, Firewatch, Sally Face - Episode One, INSIDE, and Little Nightmares II. We matched them by the tags players give Diastone: Memories on Steam (Indie, Adventure, Horror, Story Rich, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Firewatch
Shared: Adventure · Story Rich · Atmospheric

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

INSIDE
Shared: Horror · Atmospheric · Indie

Little Nightmares II
Shared: Adventure · Horror · Atmospheric

Detention
Shared: Indie · Horror · Atmospheric

Brothers - A Tale of Two Sons
Shared: Adventure · Indie · Story Rich

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Story Rich · Adventure

Tales of the Black Forest
Shared: Indie · Horror · Adventure

OMORI
Shared: Indie · Story Rich · Horror

Fran Bow
Shared: Story Rich · Horror · Adventure

Outer Wilds
Shared: Adventure · Story Rich · Atmospheric

Mouthwashing
Shared: Horror · Story Rich · Indie

What Remains of Edith Finch
Shared: Story Rich · Atmospheric · Adventure

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

The Cat Lady
Shared: Horror · Adventure · Story Rich

DISTRAINT: Deluxe Edition
Shared: Indie · Horror · Adventure

Observation
Shared: Indie · Adventure · Horror

Oxenfree
Shared: Story Rich · Indie · Atmospheric

MiSide
Shared: Story Rich · Horror · Atmospheric

OneShot
Shared: Indie · Story Rich · Atmospheric

SOMA
Shared: Horror · Story Rich · Atmospheric

Little Misfortune
Shared: Indie · Story Rich · Adventure

A Plague Tale: Innocence
Shared: Adventure · Story Rich · Atmospheric