Games like City and War
Games like City and War include Prison Architect, Oxygen Not Included, Manor Lords, RimWorld, and Against the Storm. We matched them by the tags players give City and War on Steam (Simulation, Farming Sim, City Builder, Colony Sim, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Prison Architect
Shared: Simulation · Colony Sim · City Builder

Oxygen Not Included
Shared: Colony Sim · Simulation · 2D

Manor Lords
Shared: Simulation · City Builder · Colony Sim

RimWorld
Shared: Colony Sim · Simulation · Base Building

Against the Storm
Shared: Simulation · City Builder · Colony Sim

Frostpunk
Shared: City Builder · Colony Sim · Simulation

Stardew Valley
Shared: Farming Sim · Simulation · Agriculture

Empires of the Undergrowth
Shared: Simulation · City Builder · Colony Sim

Cities: Skylines
Shared: Simulation · City Builder · Building

Banished
Shared: City Builder · Simulation · Colony Sim

Workers & Resources: Soviet Republic
Shared: Simulation · City Builder · Colony Sim

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

Dwarf Fortress
Shared: Simulation · Colony Sim · City Builder

Ostriv
Shared: Simulation · City Builder · Colony Sim

Timberborn
Shared: City Builder · Colony Sim · Building

Farthest Frontier
Shared: City Builder · Building · Colony Sim

Norland
Shared: Simulation · City Builder · Colony Sim

Songs of Syx
Shared: City Builder · Colony Sim · Simulation

Stronghold Crusader HD (2012)
Shared: City Builder · Military · Colony Sim

Settlement Survival
Shared: City Builder · Colony Sim · Simulation

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

Foundation
Shared: Simulation · City Builder · Building

Ratopia
Shared: Colony Sim · City Builder · Building

Planetbase
Shared: City Builder · Colony Sim · Simulation