Games like Omicrocity 2
Games like Omicrocity 2 include Prison Architect, Cities: Skylines, Manor Lords, Cities: Skylines II, and Foundation. We matched them by the tags players give Omicrocity 2 on Steam (Simulation, City Builder, Procedural Generation, Base Building, and God Game): closest matches first, and among equally close ones the better-known games.

Prison Architect
Shared: Simulation · Base Building · Building

Cities: Skylines
Shared: Simulation · City Builder · Building

Manor Lords
Shared: City Builder · Simulation · Base Building

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

Foundation
Shared: Simulation · City Builder · Strategy

Kingdoms and Castles
Shared: City Builder · Simulation · Strategy

Against the Storm
Shared: Simulation · City Builder · Base Building

Dwarf Fortress
Shared: Simulation · Base Building · City Builder

Workers & Resources: Soviet Republic
Shared: City Builder · Simulation · Base Building

Banished
Shared: City Builder · Simulation · Strategy

Empires of the Undergrowth
Shared: Simulation · City Builder · Base Building

SimCity™ 4 Deluxe Edition
Shared: City Builder · Base Building · Building

Planet Coaster 2
Shared: Simulation · City Builder · Building

Oxygen Not Included
Shared: Base Building · Building · Simulation

RimWorld
Shared: Base Building · Simulation · Strategy

Planet Coaster
Shared: Simulation · Building · Sandbox

Jurassic World Evolution
Shared: Simulation · Building · City Builder

Dyson Sphere Program
Shared: Base Building · Simulation · Building

The Universim
Shared: City Builder · God Game · Building

Ostriv
Shared: City Builder · Simulation · Strategy

Frostpunk
Shared: City Builder · Strategy · Base Building

Jurassic World Evolution 2
Shared: Simulation · Building · City Builder

Norland
Shared: Simulation · City Builder · Base Building

Endzone - A World Apart
Shared: City Builder · Simulation · Base Building