IMHO.

Single-player games like Alien Grounds

Below are 12 single-player Steam games similar to Alien Grounds, 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 Alien Grounds page.

Ranked picks

  1. 1
    Gunstoppable — Steam game cover

    Gunstoppable

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

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

    2026ActionIndieSingle-playerSimilar games →
  2. 2
    LeadCount — Steam game cover

    LeadCount

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

    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 →
  3. 3
    It Consumes — Steam game cover

    It Consumes

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

    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 →
  4. 4
    Seth — Steam game cover

    Seth

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

    Become Seth, god of storms, and crush Apophis’s legions in a fast-paced roguelite FPS blending Egyptian mythology with science fiction. Fast combat, random challenges, and divine power in every run.

    2026ActionIndie12.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Galactic Vault — Steam game cover

    Galactic Vault

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

    Build your weapon to its full potential in Galactic Vault, a fast-paced FPS roguelite. Discover endless upgrade combinations, craft diverse builds, and unleash devastating abilities. Get ready to infiltrate high-security vaults and recover lost tech.

    2026ActionIndie19.99 USDSingle-playerSimilar games →
  6. 6
    HELLBREAK — Steam game cover

    HELLBREAK

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

    HELLBREAK is a fast-paced roguelite, survivor-like FPS where you fight through escalating waves in brutal arenas in Hell. Build powerful loadouts, earn favor from demon lords to unlock new gear, and climb the leaderboards for your salvation.

    2025ActionIndieEarly Access14.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Slyders — Steam game cover

    Slyders

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

    Slyders is a survivor-like, roguelite bullet-hell FPS where you fight overwhelming hordes of enemies and unleash a ridiculous arsenal of upgrades. You’re Aryx, a fearless fox freedom fighter on his supersonic battle turtle who aims to liberate Sky World from evil.

    2025Action14.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    ODDCORE — Steam game cover

    ODDCORE

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

    You have only 5 minutes to stylishly explode your way through the hordes of corrupted entities in a retro FPS, roguelike liminal-nightmare... and Timmee is here to help!

    2026ActionIndieEarly Access9.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Alien Weapon Test Grounds — Steam game cover

    Alien Weapon Test Grounds

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

    Alien weapons with unique physics await in this fast-paced FPS. Battle waves of enemies across diverse landscapes, lighting, and weather. Beware the unstable space-time continuum.

    2024ActionIndieEarly AccessSingle-playerSimilar games →
  10. 10
    Exit Dream — Steam game cover

    Exit Dream

    Single-player alternative to Alien Grounds — playable solo, no multiplayer required. Shares Indie with Alien Grounds.

    A free first-person horror game about dream puzzles - unsettling, surreal and built on strange logic.

    2025IndieAdventureFree To PlayFreeSingle-playerSimilar games →
  11. 11
    NZ78 — Steam game cover

    NZ78

    Single-player alternative to Alien Grounds — playable solo, no multiplayer required. Shares Indie with Alien Grounds.

    A short atmospheric sci-fi story told through text and ink-wash images, as New Zealand faces strange events beyond explanation.

    2026IndieCasual0.99 USDSingle-playerSimilar games →
  12. 12
    Naomi’s End — Steam game cover

    Naomi’s End

    Single-player alternative to Alien Grounds — playable solo, no multiplayer required. Shares Indie with Alien Grounds.

    Naomi wakes decades older in a house she does not recognize, and discovers that escape may cost the future.

    2026IndieCasual0.59 USDSingle-playerSimilar games →