Games like Gun Shop 3
Games like Gun Shop 3 include Factorio, Totally Accurate Battle Simulator, Internet Cafe Simulator 2, Supermarket Simulator, and Cities: Skylines. We matched them by the tags players give Gun Shop 3 on Steam (Strategy, Simulation, Life Sim, Sandbox, and 3D): closest matches first, and among equally close ones the better-known games.
Factorio
Shared: Strategy · Sandbox · Automation
Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Strategy
Internet Cafe Simulator 2
Shared: Simulation · 3D · Sandbox
Supermarket Simulator
Shared: Simulation · Life Sim · First-Person
Cities: Skylines
Shared: Simulation · Strategy · Sandbox
PC Building Simulator
Shared: Simulation · Sandbox · First-Person
Stardew Valley
Shared: Life Sim · Simulation · Sandbox
shapez
Shared: Strategy · Sandbox · Automation
shapez 2 - Factory
Shared: Strategy · Simulation · Automation
Garry's Mod
Shared: Sandbox · First-Person · Simulation
Satisfactory
Shared: Automation · Sandbox · Crafting
Crusader Kings III
Shared: Strategy · Simulation · Life Sim
Recycling Center Simulator
Shared: Simulation · Life Sim · First-Person
Automation - The Car Company Tycoon Game
Shared: Simulation · Sandbox · Strategy
Dyson Sphere Program
Shared: Automation · Simulation · Sandbox
Mount & Blade II: Bannerlord
Shared: Strategy · Sandbox · Simulation
Big Ambitions
Shared: Simulation · Life Sim · Sandbox
Little Big Workshop
Shared: Strategy · Simulation · Sandbox
Schedule I
Shared: Simulation · First-Person · Automation
RimWorld
Shared: Strategy · Sandbox · Simulation
Planet Coaster 2
Shared: Simulation · Strategy · Sandbox
Stranded: Alien Dawn
Shared: Simulation · Strategy · 3D
Game Dev Tycoon
Shared: Simulation · Strategy · Indie
Alchemy Factory
Shared: Strategy · Sandbox · Automation