Games like RimWorld
Games like RimWorld include Oxygen Not Included, Prison Architect, Going Medieval, Dwarf Fortress, and Manor Lords. We matched them by the tags players give RimWorld on Steam (Colony Sim, Base Building, Survival, Strategy, and Sandbox): closest matches first, and among equally close ones the better-known games.
Oxygen Not Included
Shared: Colony Sim · Base Building · Survival
Prison Architect
Shared: Base Building · Colony Sim · Sandbox
Going Medieval
Shared: Colony Sim · Base Building · Strategy
Dwarf Fortress
Shared: Colony Sim · Base Building · Strategy
Manor Lords
Shared: Strategy · Base Building · Simulation
Space Haven
Shared: Colony Sim · Base Building · Survival
Banished
Shared: Colony Sim · Strategy · Survival
Factorio
Shared: Base Building · Sandbox · Strategy
Empires of the Undergrowth
Shared: Base Building · Strategy · Colony Sim
Against the Storm
Shared: Strategy · Base Building · Colony Sim
Frostpunk
Shared: Survival · Colony Sim · Strategy
Workers & Resources: Soviet Republic
Shared: Strategy · Base Building · Colony Sim
Kingdoms and Castles
Shared: Colony Sim · Strategy · Management
Cities: Skylines
Shared: Strategy · Management · Sandbox
Planetbase
Shared: Colony Sim · Base Building · Strategy
Dawn of Man
Shared: Colony Sim · Survival · Strategy
Norland
Shared: Strategy · Base Building · Colony Sim
Endzone - A World Apart
Shared: Survival · Strategy · Base Building
Infection Free Zone
Shared: Base Building · Strategy · Survival
Songs of Syx
Shared: Colony Sim · Strategy · Base Building
Space Engineers
Shared: Sandbox · Survival · Base Building
Timberborn
Shared: Colony Sim · Sandbox · Base Building
Amazing Cultivation Simulator
Shared: Sandbox · Strategy · Colony Sim
They Are Billions
Shared: Colony Sim · Base Building · Strategy