Games like StarShip-DF
Games like StarShip-DF include Oxygen Not Included, RimWorld, Dyson Sphere Program, Prison Architect, and Space Haven. We matched them by the tags players give StarShip-DF on Steam (Colony Sim, Simulation, Strategy, Sci-fi, and Space): closest matches first, and among equally close ones the better-known games.

Oxygen Not Included
Shared: Colony Sim · Base Building · Simulation

RimWorld
Shared: Colony Sim · Strategy · Base Building

Dyson Sphere Program
Shared: Space · Base Building · Simulation

Prison Architect
Shared: Simulation · Colony Sim · Strategy

Space Haven
Shared: Colony Sim · Strategy · Base Building

Planetbase
Shared: Colony Sim · Strategy · Space

SPORE™
Shared: Colony Sim · Simulation · God Game

Manor Lords
Shared: Strategy · Simulation · Base Building

Kingdoms and Castles
Shared: Colony Sim · Simulation · Strategy

The Universim
Shared: Colony Sim · Sandbox · God Game

Against the Storm
Shared: Simulation · Strategy · Base Building

Dwarf Fortress
Shared: Colony Sim · Simulation · Strategy

Banished
Shared: Colony Sim · Strategy · Simulation

The Crust
Shared: Colony Sim · Space · Base Building

Stellaris
Shared: Strategy · Space · Sci-fi

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

IXION
Shared: Strategy · Space · Colony Sim

Space Engineers
Shared: Simulation · Space · Sandbox

Ostriv
Shared: Simulation · Strategy · Colony Sim

Spacebase DF-9
Shared: Simulation · Space · Sci-fi

Kerbal Space Program
Shared: Simulation · Space · Sandbox

The Last Starship
Shared: Simulation · Space · Strategy

Songs of Syx
Shared: Colony Sim · Strategy · Sandbox

Workers & Resources: Soviet Republic
Shared: Strategy · Simulation · Base Building