Games like OpenTTD
Games like OpenTTD include Cities: Skylines, Cities: Skylines II, Transport Fever 2, Prison Architect, and Planet Zoo. We matched them by the tags players give OpenTTD on Steam (Simulation, Building, Economy, Sandbox, and Management): closest matches first, and among equally close ones the better-known games.
Cities: Skylines
Shared: Simulation · Building · Management
Cities: Skylines II
Shared: Simulation · Building · Sandbox
Transport Fever 2
Shared: Simulation · Management · Economy
Prison Architect
Shared: Simulation · Building · Sandbox
Planet Zoo
Shared: Simulation · Building · Management
Jurassic World Evolution
Shared: Building · Simulation · Management
Jurassic World Evolution 2
Shared: Building · Simulation · Management
Garry's Mod
Shared: Sandbox · Building · Multiplayer
Anno 1800
Shared: Simulation · Economy · Sandbox
Supermarket Simulator
Shared: Simulation · Economy · Management
Planet Coaster
Shared: Simulation · Building · Sandbox
Tropico 6
Shared: Simulation · Economy · Management
Factorio
Shared: Sandbox · Resource Management · Management
Manor Lords
Shared: Simulation · Building · Management
Train Fever
Shared: Simulation · Economy · Management
Game Dev Tycoon
Shared: Simulation · Management · Economy
Foundation
Shared: Simulation · Sandbox · Building
Kingdoms and Castles
Shared: Simulation · Management · Building
Transport Fever 3
Shared: Simulation · Management · Transportation
Railway Empire
Shared: Simulation · Economy · Management
Two Point Hospital
Shared: Simulation · Building · Management
Waterpark Simulator
Shared: Simulation · Management · Sandbox
Startup Company
Shared: Simulation · Economy · Management
House Flipper
Shared: Simulation · Building · Sandbox