Single-player games like Interstellaria
Below are 13 single-player Steam games similar to Interstellaria, 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 Interstellaria page.
Ranked picks
- 1
Cosmonautica
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
Cosmonautica is a fresh take on space trading in a procedurally generated universe, paired with quirky humor for your intergalactic enjoyment.
- 2
Orbit Zero
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Simulation with Interstellaria.
Create a Company, Build structures, Collect Resources, Make Investments and Speculate on Assets. Carefully manage your Workforce, Finances, Resources, Shareholders, BOD & Political Partnerships.
- 3
Stellar outpost commander
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
Real-time strategy game with commander task control. Pilots-Mercenary, each with their own character, and many unique ships for them. Interesting missions. Base development, various technologies and space exploration.
- 4
Deep Space Outpost
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
Deep Space Outpost is a space station building & survival game, involving resource and base management. Build your space station tile by tile, mine asteroids, refine materials and keep your station operational.
- 5
Star Trek: Infinite
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Adventure with Interstellaria.
Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.
- 6
D.R.I.F.T.
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Indie and Adventure with Interstellaria.
A slow, system-driven space sim about contracts, reputation, and survival through careful decision-making, not combat or heroics.
- 7
Void Destroyer 2
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire. A open world space sandbox, inspired by and expanding the classics.
- 8
Sins of a Solar Empire: Trinity®
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 9
Starbound
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Indie and Adventure with Interstellaria.
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...
- 10
Star Command Galaxies
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Strategy and Indie with Interstellaria.
Take command in the ultimate starship simulator: Star Command Galaxies. Become a Captain, recruit your crew, customize and upgrade your starship, battle alien vessels, teleport to away missions and repel boarding invaders in this real-time strategy simulation adventure from indie studio Warballoon.
- 11
Sun Dogs
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Indie and Adventure with Interstellaria.
Sun Dogs is about exploring our inner solar system, altering your body, and embracing death. In a distant future, humanity readily alters itself, adapting bodies to new environments. Skim along the Sun's corona, float above the surface of Venus, travel the dusty plains of Mars, and beyond.
- 12
Starlight
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Indie with Interstellaria.
This is a simple casual game.You only need to do is clicking the right stars.
- 13
Covid Simulator
Single-player alternative to Interstellaria — playable solo, no multiplayer required. Shares Indie and Simulation with Interstellaria.
COVID SIMULATOR is an outbreak simulation that visualizes how quickly Covid-19 spreads, becoming a disaster. The game is an open sandbox where you can add (or remove) Covid mandates and see what happens! Create your workplace, enact your mandates, and roll the dice with your workers.