Games like Shelter 2
Games like Shelter 2 include Endling - Extinction is Forever, Shelter, The Long Dark, Stray, and Slime Rancher. We matched them by the tags players give Shelter 2 on Steam (Adventure, Atmospheric, Survival, Indie, and Emotional): closest matches first, and among equally close ones the better-known games.

Endling - Extinction is Forever
Shared: Adventure · Atmospheric · Emotional

Shelter
Shared: Adventure · Survival · Nature

The Long Dark
Shared: Survival · Atmospheric · Adventure

Stray
Shared: Adventure · Atmospheric · Cute

Slime Rancher
Shared: Adventure · Cute · Exploration

This War of Mine
Shared: Survival · Atmospheric · Singleplayer

Rain World
Shared: Atmospheric · Survival · Indie

Firewatch
Shared: Adventure · Atmospheric · Indie

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Indie

The Last Campfire
Shared: Adventure · Atmospheric · Indie

Rise of the Tomb Raider™
Shared: Adventure · Survival · Singleplayer

A Plague Tale: Innocence
Shared: Adventure · Atmospheric · Female Protagonist

Cairn
Shared: Adventure · Indie · Atmospheric

OneShot
Shared: Indie · Atmospheric · Cute

My Little Puppy
Shared: Adventure · Emotional · Atmospheric

FAR: Lone Sails
Shared: Adventure · Atmospheric · Indie

Carto
Shared: Indie · Cute · Adventure

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

GRIS
Shared: Atmospheric · Adventure · Indie

Neva
Shared: Adventure · Atmospheric · Indie

A Short Hike
Shared: Adventure · Indie · Cute

Paws - A Shelter 2 Game
Shared: Adventure · Indie · Survival

Little Nightmares
Shared: Atmospheric · Adventure · Indie

Don't Starve
Shared: Survival · Adventure · Indie