IMHO.

Single-player games like Galactic Vault

Below are 11 single-player Steam games similar to Galactic Vault, 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 Galactic Vault page.

Ranked picks

  1. 1
    OmniGun — Steam game cover

    OmniGun

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

    Obliterate hostile automatons in this vibrant physics-based roguelite FPS. Master the OmniGun, a prototype gun capable of firing any ammunition imaginable as you shoot, explode, burn, shock, slice, freeze, shrink, and impale your way to the exit.

    ActionIndieSingle-playerSimilar games →
  2. 2
    Alien Grounds — Steam game cover

    Alien Grounds

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

    Single-player arena shooter. Weird weapons. Relentless robots. Easy to play, hard to score. Enter the chaos, shoot the bots, and compete in the Monthly Challenge.

    2026ActionIndie4.99 USDSingle-playerSimilar games →
  3. 3
    Gunstoppable — Steam game cover

    Gunstoppable

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

    A momentum-fueled Roguelite FPS where speed is damage. Dual-wield overpowered weapon combos and bend time to obliterate hordes of robots and billionaire bosses!

    ActionIndieSingle-playerSimilar games →
  4. 4
    LeadCount — Steam game cover

    LeadCount

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

    Fight against thousands of enemies at a time on a wide-open map. Earn XP for every kill and level up to gain skill points for persistent permanent upgrades. Discover synergies between different weapons, upgrades, and power-ups, making each round unique.

    2025ActionIndieCasual9.99 USDSingle-playerSimilar games →
  5. 5
    Atmos — Steam game cover

    Atmos

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

    ATMOS - is a fast-paced action roguelike, where you can shoot, slash, blast, smash, slice, bash and more!.

    ActionIndieAdventureSingle-playerSimilar games →
  6. 6
    It Consumes — Steam game cover

    It Consumes

    Single-player alternative to Galactic Vault — playable solo, no multiplayer required. Shares Action with Galactic Vault.

    It Consumes is a frantic arena shooter that takes place in the dark. See by beating your heart to reveal your foes. Choose your preferred playstyle with both roguelite and classic modes, or use the extensive custom games editor to create your own game modes with unique rules and modifiers.

    2026ActionSingle-playerSimilar games →
  7. 7
    Eternal Hatred — Steam game cover

    Eternal Hatred

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

    Eternal Hatred is a fast-paced indie shooter blending the aesthetics of ULTRAKILL and Quake. At its core lies a dark story about the nature of human cruelty and an attempt to drown out inner pain within the abyss of one's own consciousness.

    2026ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    Project Roy — Steam game cover

    Project Roy

    Single-player alternative to Galactic Vault — playable solo, no multiplayer required. Shares Action with Galactic Vault.

    Project Roy is a fast-paced FPS roguelike where you play as a rogue AI that survives by hijacking enemy robots. Combine abilities, adapt mid combat, and fight your way through a sci-fi facility to escape and defeat a powerful experimental war machine.

    2026ActionSingle-playerSimilar games →
  9. 9
    VOID/BREAKER — Steam game cover

    VOID/BREAKER

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

    Fast paced Bullet hell Roguelite FPS 🔴 Fight relentless machines driven by a hostile AI. Escape an endless cycle. Craft infinite weapon variants with deep gun modding. Forge deadly synergies. Carve your way out through enviro destruction /BREAK THE SYSTEM /BREAK FREE

    2025ActionSportsIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Deadlink — Steam game cover

    Deadlink

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

    Get ready to put a sizable dent in the profits of megacorporations in Deadlink, a guns-blazing cyberpunk FPS with roguelite elements. Your mission is to conduct covert ops while piloting a humanoid combat shell. And no, "covert" doesn’t mean "quiet."

    2023ActionIndie24.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    Deadzone: Rogue — Steam game cover

    Deadzone: Rogue

    Single-player alternative to Galactic Vault — playable solo, no multiplayer required. Shares Action with Galactic Vault.

    Deadzone: Rogue is a roguelite FPS set in space. Blast through swarms of hostile machines, combine powerful augments and elements to forge your build, and grow stronger with each run — solo or in co-op.

    2025Action24.99 USDDeck VerifiedSingle-playerSimilar games →