Games like Shadowtime
Games like Shadowtime include GRIS, Stray, Firewatch, LIMBO, and Little Nightmares. We matched them by the tags players give Shadowtime on Steam (Choose Your Own Adventure, Atmospheric, Surreal, Singleplayer, and Artificial Intelligence): closest matches first, and among equally close ones the better-known games.

GRIS
Shared: Atmospheric · Indie · Adventure

Stray
Shared: Atmospheric · Singleplayer · Adventure

Firewatch
Shared: Atmospheric · Adventure · Singleplayer

LIMBO
Shared: Atmospheric · Indie · Singleplayer

Little Nightmares
Shared: Atmospheric · Singleplayer · Adventure

The Beginner's Guide
Shared: Atmospheric · Singleplayer · Indie

FAR: Lone Sails
Shared: Atmospheric · Singleplayer · Adventure

OneShot
Shared: Atmospheric · Indie · Singleplayer

Hylics
Shared: Surreal · Atmospheric · Indie

Moncage
Shared: Singleplayer · Surreal · Atmospheric

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

Antichamber
Shared: Surreal · Singleplayer · Indie

Chants of Sennaar
Shared: Singleplayer · Adventure · Atmospheric

The Witcher 3: Wild Hunt — Remastered
Shared: Atmospheric · Singleplayer · Adventure

The Last Campfire
Shared: Singleplayer · Atmospheric · Adventure

Kentucky Route Zero: PC Edition
Shared: Atmospheric · Surreal · Adventure

Little Nightmares II
Shared: Singleplayer · Atmospheric · Adventure

Sable
Shared: Atmospheric · Choose Your Own Adventure · Adventure

Samsara Room
Shared: Indie · Adventure · Singleplayer

Life is Strange: Before the Storm
Shared: Atmospheric · Singleplayer · Choose Your Own Adventure

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Singleplayer · Adventure

The Room
Shared: Atmospheric · Singleplayer · Adventure

Road 96
Shared: Atmospheric · Choose Your Own Adventure · Adventure

INSIDE
Shared: Atmospheric · Singleplayer · Indie