Games like The Colony
Games like The Colony include RimWorld, Banished, Prison Architect, Dwarf Fortress, and Manor Lords. We matched them by the tags players give The Colony on Steam (Colony Sim, Strategy, and Simulation): closest matches first, and among equally close ones the better-known games.

RimWorld
Shared: Colony Sim · Strategy · Simulation

Banished
Shared: Colony Sim · Strategy · Simulation

Prison Architect
Shared: Simulation · Colony Sim · Strategy

Dwarf Fortress
Shared: Colony Sim · Simulation · Strategy

Manor Lords
Shared: Strategy · Simulation · Colony Sim

Against the Storm
Shared: Strategy · Simulation · Colony Sim

Empires of the Undergrowth
Shared: Strategy · Simulation · Colony Sim

Kingdoms and Castles
Shared: Colony Sim · Simulation · Strategy

Dawn of Man
Shared: Colony Sim · Strategy · Simulation

Norland
Shared: Strategy · Simulation · Colony Sim

Workers & Resources: Soviet Republic
Shared: Strategy · Simulation · Colony Sim

Oxygen Not Included
Shared: Colony Sim · Simulation · Strategy

Frostpunk
Shared: Strategy · Colony Sim · Simulation

Amazing Cultivation Simulator
Shared: Simulation · Strategy · Colony Sim

Space Haven
Shared: Colony Sim · Strategy · Simulation

Ostriv
Shared: Strategy · Simulation · Colony Sim

The Guild II Renaissance
Shared: Strategy · Colony Sim · Simulation

Stranded: Alien Dawn
Shared: Simulation · Strategy · Colony Sim

Stonehearth
Shared: Colony Sim · Strategy · Simulation

SPORE™
Shared: Colony Sim · Simulation · Strategy

Whiskerwood
Shared: Strategy · Simulation · Colony Sim

Life is Feudal: Forest Village
Shared: Colony Sim · Strategy · Simulation

Surviving Mars: Relaunched
Shared: Strategy · Colony Sim · Simulation

Foundation
Shared: Simulation · Strategy · Colony Sim