Games like Train World
Games like Train World include Transport Fever 2, Cities: Skylines, Cities: Skylines II, Jurassic World Evolution, and Planet Coaster. We matched them by the tags players give Train World on Steam (Simulation, Trains, Strategy, Sandbox, and 3D): closest matches first, and among equally close ones the better-known games.

Transport Fever 2
Shared: Simulation · Strategy · Trains

Cities: Skylines
Shared: Simulation · Strategy · Sandbox

Cities: Skylines II
Shared: Simulation · Sandbox · Strategy

Jurassic World Evolution
Shared: Simulation · Strategy · Sandbox

Planet Coaster
Shared: Simulation · Sandbox · Strategy

Planet Coaster 2
Shared: Simulation · Strategy · Sandbox

Jurassic World Evolution 2
Shared: Simulation · Sandbox · Strategy

Planet Zoo
Shared: Simulation · Sandbox · Management

Railway Empire
Shared: Simulation · Strategy · Trains

Transport Fever 3
Shared: Simulation · Strategy · Trains

Manor Lords
Shared: Simulation · Strategy · Sandbox

Supermarket Simulator
Shared: Simulation · Singleplayer · Management

Prison Architect
Shared: Simulation · Sandbox · Strategy

Anno 1800
Shared: Simulation · Strategy · Sandbox

Dyson Sphere Program
Shared: Simulation · Sandbox · Resource Management

Factorio
Shared: Sandbox · Strategy · Resource Management

Railway Empire 2
Shared: Simulation · Trains · Strategy

Train Fever
Shared: Simulation · Trains · Strategy

Foundation
Shared: Simulation · Strategy · Sandbox

Against the Storm
Shared: Simulation · Strategy · Sandbox

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Strategy

Mashinky
Shared: Simulation · Strategy · Trains

Captain of Industry
Shared: Simulation · Strategy · Resource Management

Workers & Resources: Soviet Republic
Shared: Simulation · Strategy · Sandbox

