Games like Cutish
Games like Cutish include Firewatch, Journey, GRIS, ABZU, and The Last Campfire. We matched them by the tags players give Cutish on Steam (Adventure, Indie, Atmospheric, Singleplayer, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Atmospheric · Singleplayer

Journey
Shared: Adventure · Atmospheric · Indie

GRIS
Shared: Atmospheric · Indie · Adventure

ABZU
Shared: Atmospheric · Adventure · Relaxing

The Last Campfire
Shared: Adventure · Singleplayer · Indie

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Walking Simulator

The Beginner's Guide
Shared: Indie · Atmospheric · Walking Simulator

The First Tree
Shared: Adventure · Atmospheric · Indie

Stray
Shared: Adventure · Atmospheric · Singleplayer

Little Nightmares
Shared: Adventure · Atmospheric · Singleplayer

Chants of Sennaar
Shared: Adventure · Indie · Singleplayer

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

FAR: Lone Sails
Shared: Adventure · Atmospheric · Singleplayer

AER Memories of Old
Shared: Adventure · Indie · Atmospheric

Cairn
Shared: Indie · Adventure · Singleplayer

A Story About My Uncle
Shared: Adventure · Indie · Singleplayer

Neva
Shared: Adventure · Atmospheric · Indie

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

The Long Dark
Shared: Atmospheric · Adventure · Singleplayer

Sable
Shared: Atmospheric · Adventure · Choose Your Own Adventure

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

Deliver Us The Moon
Shared: Adventure · Indie · Atmospheric

Gone Home
Shared: Indie · Atmospheric · Walking Simulator

Little Nightmares II
Shared: Adventure · Singleplayer · Atmospheric