Single-player games like Space Haven
Below are 16 single-player Steam games similar to Space Haven, 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 Space Haven page.
Ranked picks
- 1

Surviving Mars
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Simulation with Space Haven.
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.
- 2

Oxygen Not Included
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Indie and Simulation with Space Haven.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 3

RimWorld
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 4

The Crust
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Simulation with Space Haven.
Automate a lunar base as you become the savior of humanity exploring the future on the moon. Mine, craft, research, and trade resources with Earth in this gripping narrative basebuilder.
- 5

Planetbase
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.
- 6

Stardeus
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Stardeus is a deep colony sim set on a broken starship manned by drones and hibernating human survivors. As the AI, have your drones repair your ship, save your crew and travel the stars in this beautiful simulation.
- 7

Norland
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Simulation with Space Haven.
Lead your noble family in this medieval colony sim, facing off against class conflict, religious struggle, and political treachery. Tend to your people’s needs, uncover the lost knowledge of a fallen empire, and engage in nefarious plots against your enemies.
- 8

Dyson Sphere Program
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
- 9

Starvector
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Eat a snack while you watch an entire planet burn in your image.
- 10

Star Traders: Frontiers
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and RPG with Space Haven.
You are the captain of a starship venturing through a massive open universe. Customize your crew and take command at the helm of your very own ship as you explore a galaxy torn apart by internal strife, alien threats, and political intrigue.
- 11

UBOAT
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
UBOAT is a simulator of a submarine from WWII era. It is a survival sandbox with crew management mechanics while its primary theme is life of German sailors. The boat is their home, but it can become their grave at any time.
- 12

Abandon Ship
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Take command of an 'Age of Sail' ship and her crew, exploring a vast, story-filled world that reacts to your decisions. Engage enemy vessels, fortifications and sea monsters in brutal tactical combat, all framed in an art style inspired by classic Naval Oil Paintings.
- 13

Stellaris
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Simulation with Space Haven.
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
- 14

Ostranauts
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Indie and Simulation with Space Haven.
Navigate your scrappy ship through the boneyard in search of valuable parts in abandoned vessels. Use salvage to upgrade your ship, or sell it for cash to pay down your mounting debt, or restock fuel, air, or food. Fly and role-play aboard your dream spaceship in this hardcore noir space-sim.
- 15

Battlevoid: Harbinger
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Battlevoid: Harbinger is a hard sci-fi space exploration game blending roguelike, turn-based, star map strategy, and real-time space battles. You are a young commander venturing out into enemy territories, to unknown galaxies, never knowing what you will face as you jump out from hyperspace.
- 16

Battlevoid: Sector Siege
Single-player alternative to Space Haven — playable solo, no multiplayer required. Shares Strategy and Indie with Space Haven.
Battlevoid: Sector Siege is an epic straight into action real-time space strategy game, in which the world has been built to deliver a lively battle field; and the action is never more than just seconds away at the start of every game.