Games like Shelter
Games like Shelter include SUMMERHOUSE, Foxhole, Garry's Mod, Creeper World 4, and TheoTown. We matched them by the tags players give Shelter on Steam (Casual, Pixel Graphics, Wargame, City Builder, and 3D): closest matches first, and among equally close ones the better-known games.

SUMMERHOUSE
Shared: Casual · City Builder · Pixel Graphics

Foxhole
Shared: Wargame · Military · Top-Down

Garry's Mod
Shared: Casual · Building · Physics

Creeper World 4
Shared: Wargame · Building · 3D

TheoTown
Shared: Pixel Graphics · City Builder · Casual

SimAirport
Shared: Casual · City Builder · Building

Stardew Valley
Shared: Pixel Graphics · Casual · Building

Sprocket
Shared: Wargame · Military · Building

ISLANDERS
Shared: City Builder · Building · Indie

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Singleplayer

Cities: Skylines
Shared: City Builder · Building · Casual

Townscaper
Shared: Casual · City Builder · Building

Hearth and Hamlet
Shared: Casual · City Builder · Base Building

Vampire Survivors
Shared: Pixel Graphics · Casual · Indie

Cookie Clicker
Shared: Casual · Pixel Graphics · Indie

Prison Architect
Shared: Building · City Builder · Base Building

Songs of Syx
Shared: City Builder · Building · Top-Down

Mini Motorways
Shared: Casual · Indie · City Builder

Kingdom Two Crowns
Shared: City Builder · Building · Base Building

Timberman
Shared: Casual · Pixel Graphics · Indie

Ballads of Hongye: REBORN
Shared: Casual · City Builder · 3D

Mandate Order
Shared: City Builder · Wargame · Building

Littlewood
Shared: Pixel Graphics · City Builder · Casual

Timberborn
Shared: City Builder · Building · Base Building