IMHO.

Single-player games like Gamma Bros

Below are 16 single-player Steam games similar to Gamma Bros, 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 Gamma Bros page.

Ranked picks

  1. 1
    Habroxia — Steam game cover

    Habroxia

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

    Blast your way through a myriad of extra-terrestrial incursions in this arcade-style scrolling shooter! Pilot the ship Habroxia through 15 levels featuring intense boss fights, rescue missions, shifting perspectives, and untold surprises.

    2023ActionIndie7.99 USDDeck VerifiedSingle-playerSimilar games →
  2. 2
    Cyberhunt — Steam game cover

    Cyberhunt

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

    Cyberhunt is a retro procedurally generated twin stick shooter, that takes you back to the sweet to the sweet arcade machines era!

    2017ActionIndieAdventure4.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Beat Hazard — Steam game cover

    Beat Hazard

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

    Experience your music collection like never before with this intense music driven arcade shooter. Each of your songs will have its own unique ebb and flow based on the music.

    2010ActionIndieCasual9.99 USDSingle-playerSimilar games →
  4. 4
    Arcadium - Space Odyssey — Steam game cover

    Arcadium - Space Odyssey

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

    Arcadium is a survival roguelite set in a dynamic, ever-changing universe. Journey across space, harvest planetary resources, and craft powerful builds to eradicate relentless waves of aliens. Each playthrough unveils a new and uncharted universe, ensuring endless challenges and discoveries.

    2026ActionIndieRPG7.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    SCHAR: Blue Shield Alliance — Steam game cover

    SCHAR: Blue Shield Alliance

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

    SCHAR: Blue Shield Alliance is a cooperative twin-stick shooter that features a variety of complementing ship classes to choose from. Upgrade your ships, defeat hundreds of enemies, save the galaxy all with some friends from the comfort of your couch.

    2015ActionIndie3.99 USDSingle-playerSimilar games →
  6. 6
    Vectorium — Steam game cover

    Vectorium

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

    Vectorium is a classical, yet intense arcade shooting game. Can you survive those dreadful enemies and barrage of gunfire?

    2018ActionIndieCasual4.99 USDSingle-playerSimilar games →
  7. 7
    Bleed 2 — Steam game cover

    Bleed 2

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

    Bleed 2 is a relentless arcade action game featuring air-dodging, bullet-reflecting, and tons of bosses. Now with randomly-generated levels and daily challenges, too!

    2017ActionIndie9.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Cycle 28 — Steam game cover

    Cycle 28

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

    Cycle 28 is an intense momentum-based space shooter driven by a cinematic orchestral soundtrack. A game where the physics, the music, and the fight to survive combine to pull you into a place where nothing else exists... just you, your ship, and the need to do better.

    2018Action3.99 USDSingle-playerSimilar games →
  9. 9
    Dino Run DX — Steam game cover

    Dino Run DX

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

    DINOSAURS. PIXELS. PYROCLASTIC DOOM WALLS. MASSIVE INDIE CROSSOVERS. Dino Run DX has all of that and more. Come rediscover the original runner and escape extinction all over again.

    2015ActionIndieRacing5.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Utopia Must Fall — Steam game cover

    Utopia Must Fall

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

    Defend humanity's last surviving metropolis from mysterious alien machinations in this challenging base-defense arcade shooter. Featuring rapid upgrade progression, procedurally generated attack waves, dark humor and laser-sharp aesthetics.

    2024ActionIndieEarly Access8.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Potatoman Seeks the Troof — Steam game cover

    Potatoman Seeks the Troof

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

    Potatoman will put your reflexes and worldview to the test as you journey through scorching deserts, dark forests, busy cities, the tallest mountains and eventually your own potato-consciousness in search of the ultimate answer. Are you prepared to face the TROOF?

    2014Indie3.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Last Horizon — Steam game cover

    Last Horizon

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

    A minimal space exploration and survival game. Pilot the last vessel of a fallen civilization into the vast unknown, in search of a new world to call home.

    2015ActionIndie5.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Glorkian Warrior: The Trials Of Glork — Steam game cover

    Glorkian Warrior: The Trials Of Glork

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

    A comic-styled mashup of Galaga-style shoot-em-up, simple platforming action, and Saturday morning cartoon. In collaboration with Eisner-award-winning cartoonist James Kochalka!

    2015Indie4.99 USDDeck PlayableSingle-playerSimilar games →
  14. 14
    Snowball! — Steam game cover

    Snowball!

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

    . . .. ... ......A homegrown, hand-cranked winter pinball adventure. Send your behemoth snow spheres through a bobsled maze of snowbanks, homemade wooden paddles, Tesla coils, igloos, railcars and more... ... .. . .

    2016ActionIndie3.99 USDSingle-playerSimilar games →
  15. 15
    Bitku — Steam game cover

    Bitku

    Single-player alternative to Gamma Bros — playable solo, no multiplayer required. Shares Indie and Free To Play with Gamma Bros.

    A totally free simple storyteller, a comic creator, an art toy, a new way to express yourself in pixels... BITKU is all or none of the above.

    2017IndieFree To PlayFreeSingle-playerSimilar games →
  16. 16
    Cheap Golf — Steam game cover

    Cheap Golf

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

    A retromodern and surreal minigolf comedy hosted by the infamous AI bot SUSAN. ...//-- Fling up and go FULL BOOP --\\...

    2018ActionSportsIndie4.99 USDDeck PlayableSingle-playerSimilar games →