IMHO.

Single-player games like Synvector

Below are 8 single-player Steam games similar to Synvector, 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 Synvector page.

Ranked picks

  1. 1
    Starlight Brigade — Steam game cover

    Starlight Brigade

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Adventure with Synvector.

    Starlight Brigade is a realistic space action-adventure game with a precise combat system and full 6DOF controls. You command the Wayfarer, an aging light cruiser centuries past her time. Plot missile salvos, hunt down your enemy, design munitions, manage your crew, and send engineers to fix damage.

    2026ActionAdventureSimulationSingle-playerSimilar games →
  2. 2
    Starcom: Unknown Space — Steam game cover

    Starcom: Unknown Space

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.

    2024ActionIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    The Mystery Of The Moon — Steam game cover

    The Mystery Of The Moon

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    The game of survival and construction on the surface of the moon. Learn to build a base on the surface of the moon, maintain survival, explore and discover the secrets inside the moon, and solve abnormal problems.

    2023ActionIndieAdventure59.99 USDSingle-playerSimilar games →
  4. 4
    List — Steam game cover

    List

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    LIST is a 3D anime action-RPG where you slow time, grab weapons mid-air, and study a single evolving boss. Every death makes you stronger as you search for the monster’s weakness in a fast, strategic shōnen-style duel.

    ActionIndieRPGSingle-playerSimilar games →
  5. 5
    Unconquered Sun — Steam game cover

    Unconquered Sun

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    A space-sim and roguelite where you build your own ship and live in it. Survive in a procedural galaxy or become part of history.

    ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    EVERSPACE™ 2 — Steam game cover

    EVERSPACE™ 2

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Adventure with Synvector.

    EVERSPACE 2 is a fast-paced single-player spaceship shooter with exploration in space and on planets, tons of loot, RPG elements, mining, and crafting. Experience an exciting sci-fi story set in a vivid, handcrafted open world full of secrets, puzzles, and perils.

    2023ActionAdventureSimulation49.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Space Commander: War and Trade — Steam game cover

    Space Commander: War and Trade

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    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 →
  8. 8
    SpaceBourne 2 — Steam game cover

    SpaceBourne 2

    Single-player alternative to Synvector — playable solo, no multiplayer required. Shares Action and Indie with Synvector.

    Embark on a journey to greatness. Get ready for adrenaline-fueled battles and a chance to claim your place in the galaxy. Grab the controls of your ship, gear up for the fight, and unleash your ambition to conquer and build a new empire in the vastness of space.

    2025ActionStrategyIndie19.99 USDDeck PlayableSingle-playerSimilar games →