Games like Earth Space Colonies
Games like Earth Space Colonies include Banished, IXION, Dawn of Man, Endzone - A World Apart, and Planetbase. We matched them by the tags players give Earth Space Colonies on Steam (Simulation, Strategy, Indie, Space, and Survival): closest matches first, and among equally close ones the better-known games.

Banished
Shared: Strategy · Simulation · City Builder

IXION
Shared: Strategy · Space · City Builder

Dawn of Man
Shared: Strategy · Simulation · City Builder

Endzone - A World Apart
Shared: Strategy · Simulation · Survival

Planetbase
Shared: Strategy · Space · City Builder

FTL: Faster Than Light
Shared: Strategy · Space · Indie

Frostpunk
Shared: Strategy · Survival · City Builder

Manor Lords
Shared: Strategy · Simulation · City Builder

Spacebase DF-9
Shared: Simulation · Space · Strategy

Space Haven
Shared: Strategy · Survival · Simulation

Frostpunk 2
Shared: Strategy · Simulation · City Builder

Foundation
Shared: Simulation · Strategy · City Builder

The Universim
Shared: City Builder · Survival · Strategy

RimWorld
Shared: Strategy · Survival · Simulation

Dwarf Fortress
Shared: Simulation · Strategy · City Builder

Space Engineers
Shared: Simulation · Space · Survival

Cities: Skylines
Shared: Simulation · Strategy · City Builder

Plague Inc: Evolved
Shared: Simulation · Strategy · Indie

Against the Storm
Shared: Simulation · Strategy · City Builder

Ostriv
Shared: Strategy · Simulation · City Builder

Empyrion - Galactic Survival
Shared: Simulation · Space · Survival

Oxygen Not Included
Shared: Survival · Simulation · Strategy

Stonehearth
Shared: Strategy · City Builder · Simulation

This War of Mine
Shared: Survival · Strategy · Simulation