Single-player games like Colonization Simulator
Below are 8 single-player Steam games similar to Colonization Simulator, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Colonization Simulator page.
Ranked picks
- 1

Stronghold Crusader HD (2012)
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Colonization Simulator.
The highly anticipated sequel to the best-selling Stronghold, Stronghold Crusader HD throws you into historic battles and castle sieges from the Crusades with fiendish AI opponents, new units, 4 historical campaigns and over 100 unique skirmish missions.
- 2

Stronghold: Definitive Edition
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Colonization Simulator.
Greetings sire! Your stronghold awaits you. Build a castle economy, besiege unforgettable villains and return to the 'castle sim' that started it all. Experience this classic RTS with upgraded visuals, modernised gameplay, Steam multiplayer and a new campaign.
- 3

Cliff Empire
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Colonization Simulator.
After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!
- 4

Prison Architect
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Colonization Simulator.
Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.
- 5

Space Haven
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Colonization Simulator.
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
- 6

Kingdoms and Castles
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Indie with Colonization Simulator.
Kingdoms and Castles is a city-building simulation game about growing a kingdom from a tiny hamlet to a sprawling city and imposing castle. Make trade agreements, alliance, and war with neighboring AI controlled kingdoms. Each villager and resource is individually simulated.
- 7

Surviving Mars
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Colonization Simulator.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 8

STATIONflow
Single-player alternative to Colonization Simulator — playable solo, no multiplayer required. Shares Strategy and Simulation with Colonization Simulator.
STATIONflow is a game about controlling the flow of thousands of passengers by building and managing an efficient underground train station.