Single-player games like Stardeus
Below are 9 single-player Steam games similar to Stardeus, 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 Stardeus page.
Ranked picks
- 1

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

Ostranauts
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Indie and Simulation with Stardeus.
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.
- 3

The Last Starship
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Strategy and Indie with Stardeus.
The Last Starship is a 2D space construction game where you design and upgrade your starship. Choose your path: pirate hunter, miner, engineer, spacebus driver, and more, whilst exploring vibrant star systems. Enjoy a growing sandbox world, with regular free updates. Your cosmic adventure awaits!
- 4

Oxygen Not Included
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Indie and Simulation with Stardeus.
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.
- 5

Stranded: Alien Dawn
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Strategy and Simulation with Stardeus.
Brave a new world in Stranded: Alien Dawn, a planet survival sim placing the fate of a small marooned group in your hands. Forge your story through compelling and immersive strategic gameplay as you make vital decisions to protect your survivors.
- 6

Dwarf Fortress
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Strategy and Indie with Stardeus.
Build a fortress and try to help your dwarves survive against a deeply generated world. Keep your dwarves happy, grow their community and beware of digging too deeply. The deepest, most intricate simulation of a world that's ever been created.
- 7

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

RimWorld
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Strategy and Indie with Stardeus.
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.
- 9

Bloody Rally Show
Single-player alternative to Stardeus — playable solo, no multiplayer required. Shares Indie and Simulation with Stardeus.
Welcome to Bloody Rally Show - a head-on smash between frenetic top-down arcade racing and hyperviolent reality TV. You must drift, boost, and blast to keep the viewers entertained and your paymasters happy. Go full throttle and drive to survive! Includes local multiplayer mayhem for up to 4 players