IMHO.

Single-player games like Starcom: Unknown Space

Below are 15 single-player Steam games similar to Starcom: Unknown Space, 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 Starcom: Unknown Space page.

Ranked picks

  1. 1
    Starcom: Nexus — Steam game cover

    Starcom: Nexus

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home.

    2019ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Starfield Battlegrounds — Steam game cover

    Starfield Battlegrounds

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    On the occasion of the invasion of alien races, in order to defend our homeland on Earth, you will play the role of one of humanity's ace pilots, piloting aircraft provided by various countries, galloping in the universe, and fighting against alien fleets.

    2025ActionStrategyIndie6.99 USDSingle-playerSimilar games →
  3. 3
    Nano Squadron — Steam game cover

    Nano Squadron

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Manage your shields, evolve your ship, defend Earth. Nano Squadron is a top-down space roguelite where every run brings new upgrades and every mistake leaves you exposed.

    2026ActionIndie4.79 USDSingle-playerSimilar games →
  4. 4
    Silent Sector — Steam game cover

    Silent Sector

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Oldschool action open-world sci-fi with a unique storyline, frenetic battles, crude humor, loose morals and cows.

    2021ActionIndieSimulation14.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Star Vortex — Steam game cover

    Star Vortex

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Star Vortex is a fast paced Action-RPG inspired by classics of the genre. Design your ship, fight your way through hostile alien sectors, upgrade as you salvage rare weapons and experiment with different builds until nothing can stand against you.

    2025ActionIndieRPG21.24 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Landinar: Into the Void — Steam game cover

    Landinar: Into the Void

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Landinar: Into the Void is a top-down space-adventure-RPG. You are recruited as a rookie bounty hunter in the oppressive Landinar Empire. On your journey through the quadrant you will meet diverse characters, build your own spaceship and choose your battles.

    2019ActionIndieAdventure19.99 USDSingle-playerSimilar games →
  7. 7
    Transcendence — Steam game cover

    Transcendence

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Explore the farthest reaches of Human Space in this open-world space adventure. Compelled to journey to the Galactic Core by a mysterious hyperintelligence, you must fight your way through dozens of star systems teeming with clashing empires, expansionist AIs, and fearsome xenophobes.

    2015ActionIndieRPG14.99 USDSingle-playerSimilar games →
  8. 8
    Space Commander: War and Trade — Steam game cover

    Space Commander: War and Trade

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Fight, explore the stars, trade, and lead your fleet across the galaxySpace Commander: War and Trade is an ultimate single player space-sim featuring spectacular graphics, intuitive combat and deep mechanics.

    2020ActionIndieRPGFreeSingle-playerSimilar games →
  9. 9
    Star Valor — Steam game cover

    Star Valor

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Choose your own destiny as you explore an open-world procedurally generated galaxy where anything is possible. Become a miner, a trader, a bounty hunter, a pirate, or perhaps a jack of all trades. Start off small and build your way to the top but remember with every action, comes consequences.

    2022ActionIndieRPG24.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Star Control III — Steam game cover

    Star Control III

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    The universe is on the brink of destruction. It’s up to you to embark on an epic adventure of strategy and diplomacy to save thousands of worlds from total annihilation. But no pressure, right?

    2017ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  11. 11
    Starlight — Steam game cover

    Starlight

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Indie with Starcom: Unknown Space.

    This is a simple casual game.You only need to do is clicking the right stars.

    2019IndieCasual0.99 USDSingle-playerSimilar games →
  12. 12
    Star Control I and II — Steam game cover

    Star Control I and II

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and Indie with Starcom: Unknown Space.

    Explore a vast universe with pulse-pounding action, side-splitting humor, and hair-raising plot twists in these 2 classic space adventure games.

    2017ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  13. 13
    Sid Meier's Pirates! — Steam game cover

    Sid Meier's Pirates!

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares RPG with Starcom: Unknown Space.

    Sail the Caribbean, marauding all on the high seas or ally your ship and crew as a privateer in search of riches - the life you choose is up to you. Face dogged enemies, raid unsuspecting villages, woo fair maidens, avoid capture or dig for buried treasure. Discover what it takes to become one of the most famous pirates in history!

    2005RPG9.99 USDSingle-playerSimilar games →
  14. 14
    Mass Effect (2007) — Steam game cover

    Mass Effect (2007)

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required. Shares Action and RPG with Starcom: Unknown Space.

    As Commander Shepard, you lead an elite squad on a heroic, action-packed adventure throughout the galaxy.

    2008ActionRPG5.99 USDDeck PlayableSingle-playerSimilar games →
  15. 15
    Stellaris — Steam game cover

    Stellaris

    Single-player alternative to Starcom: Unknown Space — playable solo, no multiplayer required.

    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.

    2016StrategySimulation9.99 USDDeck PlayableSingle-playerSimilar games →