Games like Simple Builder
Games like Simple Builder include Banished, Cities: Skylines, Gas Station Simulator, Garry's Mod, and Kingdom Two Crowns. We matched them by the tags players give Simple Builder on Steam (Casual, Simulation, City Builder, First-Person, and Building): closest matches first, and among equally close ones the better-known games.

Banished
Shared: City Builder · Simulation · Survival

Cities: Skylines
Shared: Simulation · City Builder · Building

Gas Station Simulator
Shared: Simulation · Casual · Building

Garry's Mod
Shared: Casual · Building · First-Person

Kingdom Two Crowns
Shared: City Builder · Building · Medieval

Foundation
Shared: Simulation · City Builder · Medieval

Frostpunk
Shared: City Builder · Survival · Building

Medieval Dynasty
Shared: Building · Medieval · Survival

House Flipper
Shared: Simulation · Casual · Building

Cities: Skylines II
Shared: Simulation · City Builder · Building

Oxygen Not Included
Shared: Building · Survival · Base Building

Manor Lords
Shared: Simulation · City Builder · Base Building

Endzone - A World Apart
Shared: City Builder · Simulation · Survival

Space Engineers
Shared: Simulation · Building · Survival

Settlement Survival
Shared: City Builder · Building · Simulation

Prison Architect
Shared: Simulation · Building · City Builder

Against the Storm
Shared: Simulation · City Builder · Building

My Summer Car
Shared: Simulation · First-Person · Survival

Sons Of The Forest
Shared: Survival · Base Building · Building

Townscaper
Shared: Casual · City Builder · Building

Life is Feudal: Forest Village
Shared: City Builder · Simulation · Medieval

Tavern Master
Shared: Simulation · Building · Medieval

Farthest Frontier
Shared: City Builder · Building · Medieval

Bellwright
Shared: City Builder · Survival · Medieval