Games like Oceanopolis 2000
Games like Oceanopolis 2000 include Cities: Skylines, Planet Coaster 2, Banished, Prison Architect, and Manor Lords. We matched them by the tags players give Oceanopolis 2000 on Steam (Simulation, Strategy, 3D, City Builder, and Colony Sim): closest matches first, and among equally close ones the better-known games.

Cities: Skylines
Shared: Simulation · City Builder · Strategy

Planet Coaster 2
Shared: Simulation · Strategy · City Builder

Banished
Shared: Strategy · Simulation · City Builder

Prison Architect
Shared: Simulation · Strategy · Colony Sim

Manor Lords
Shared: Strategy · Simulation · City Builder

Kingdoms and Castles
Shared: City Builder · Simulation · Colony Sim

Foundation
Shared: Simulation · City Builder · Strategy

Frostpunk
Shared: City Builder · Strategy · Colony Sim

Workers & Resources: Soviet Republic
Shared: Strategy · Simulation · City Builder

Against the Storm
Shared: Simulation · Strategy · City Builder

Planet Coaster
Shared: Simulation · Strategy · Building

Empires of the Undergrowth
Shared: Simulation · Strategy · City Builder

Ostriv
Shared: Strategy · Simulation · City Builder

Cliff Empire
Shared: Strategy · Simulation · City Builder

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

Dwarf Fortress
Shared: Simulation · Strategy · Colony Sim

Offworld Trading Company
Shared: 3D · Strategy · Simulation

Jurassic World Evolution
Shared: Simulation · Strategy · City Builder

Settlement Survival
Shared: City Builder · Simulation · Colony Sim

Farthest Frontier
Shared: Strategy · City Builder · Building

Norland
Shared: Simulation · Strategy · City Builder

The Settlers: New Allies
Shared: Strategy · Simulation · City Builder

Tropico 6
Shared: Strategy · Simulation · City Builder

Tavern Master
Shared: Simulation · Strategy · City Builder

