IMHO.

Games like Gray Goo

Gray goo is a short retro arcade shooter with lots of upgrades. This game is about destroying goo in space and saving the universe.

2025ActionIndieCasual1.99 USDWindowsby Glitch Nomads
Gray Goo header

Players who liked Gray Goo also play

Ranked by collaborative filtering across millions of Steam libraries plus content overlap on genres, tags, and developers.

  1. 1

    UfoPilot : The Phadt Menace - Steam Edition

    A sci-fi retro side-scrolling shoot-em-up / rescue game.

    2021ActionIndieCasual4.99 USDSteam ↗
  2. 2

    FORTRESS DEFENDER

    This game, "FORTRESS DEFENDER", is a side-scrolling power-up shooting game with an 80's flavor. Defeat the enemies that appear one after another, dodge their attacks, and aim for the boss that lurks in the depths of the stage. There are a total of eight stages with various tricks and bosses.

    2021ActionIndie4.99 USDSteam ↗
  3. 3

    Chromacell

    In this sideways scrolling shmup, take control of your spaceship and navigate through vibrant pixelated environments filled with hordes of enemy spacecraft. Upgrade your ship and weapons, dodge enemy fire while blasting through each stage. Emerge victorious as the ultimate space pilot!

    2024Action5.99 USDSteam ↗
  4. 4

    MoonLess

    Moonless is a challenging side-scrolling platformer in the style of classic arcade games of the 1980s, where you control a helpless astronaut who has been left stranded on the moon, and now has to face an invading alien force to earn a chance to go home.

    2023ActionIndieCasual3.99 USDSteam ↗
  5. 5

    PigShip and the Giant Wolf

    Pig Ship and the Giant Wolf is a classic Shoot'em Up with a 8btis monochrome aesthetic. Cross the 6 worlds full of enemies and defeat the Giant Wolf to save your brothers.

    2023ActionIndie7.99 USDSteam ↗
  6. 6

    Gundroid

    Protect the Earth from an alien invasion in this Run N’ Gun action spectacle. Take control of G.U.N.N.R. and battle your way through a blast from the pixelated past.

    2025ActionIndie11.99 USDSteam ↗
  7. 7

    Anceder

    Dive in the VR arcade shoot-them-up (shmup, shoot'em up, bullet hell). A lot of action is awaiting you. "Insert coin" and jump in the shmup !

    2018ActionIndieCasual12.99 USDSteam ↗
  8. 8

    Earthion

    Earthion is a side-scrolling space shooter developed natively for 16-bit systems. Guide space fighter pilot Azusa Takanashi in her fight to repel the alien invaders and save planet Earth.

    2025Action19.99 USDSteam ↗

Frequently asked about Gray Goo

How much does Gray Goo cost?
Gray Goo is listed on Steam at 1.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Gray Goo?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Gray Goo are UfoPilot : The Phadt Menace - Steam Edition, FORTRESS DEFENDER, Chromacell.
Who developed Gray Goo?
Gray Goo was developed by Glitch Nomads.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Gray Goo.

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Games like Gray Goo — top similar games · imho.run