Games like ARCWATT: Power Empire
Games like ARCWATT: Power Empire include Prison Architect, Manor Lords, Kingdoms and Castles, Cities: Skylines, and Frostpunk. We matched them by the tags players give ARCWATT: Power Empire on Steam (City Builder, Base Building, Colony Sim, Management, and Economy): closest matches first, and among equally close ones the better-known games.

Prison Architect
Shared: Base Building · Colony Sim · City Builder

Manor Lords
Shared: City Builder · Base Building · Strategy

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

Cities: Skylines
Shared: City Builder · Management · Simulation

Frostpunk
Shared: City Builder · Colony Sim · Resource Management

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

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

Oxygen Not Included
Shared: Base Building · Colony Sim · Resource Management

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

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

Foundation
Shared: City Builder · Management · Simulation

RimWorld
Shared: Base Building · Colony Sim · Management

Norland
Shared: City Builder · Base Building · Colony Sim

Dwarf Fortress
Shared: Base Building · Colony Sim · City Builder

Banished
Shared: City Builder · Colony Sim · Strategy

Ostriv
Shared: City Builder · Colony Sim · Strategy

Jurassic World Evolution
Shared: Management · City Builder · Building

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

Captain of Industry
Shared: Base Building · Resource Management · City Builder

Farthest Frontier
Shared: City Builder · Resource Management · Strategy

Kingdoms Reborn
Shared: City Builder · Colony Sim · Base Building

IXION
Shared: City Builder · Colony Sim · Base Building

Settlement Survival
Shared: City Builder · Colony Sim · Management

Planet Zoo
Shared: Management · City Builder · Simulation