IMHO.

Single-player games like Hello Space

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

Ranked picks

  1. 1
    Viral Reload EX — Steam game cover

    Viral Reload EX

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

    Viral Reload EX is a shoot-em-up with a dash mechanic where you shrink down to fight infections at a microscopic scale! Can you defeat the evil Kyle Kaboom before he destroys the moon?

    2026ActionIndie7.49 USDSingle-playerSimilar games →
  2. 2
    Phobos Down — Steam game cover

    Phobos Down

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

    A sci-fi twin stick shooter stripped down to the bare essentials with focus on smooth controls and satisfying action.

    2025ActionIndie5.99 USDSingle-playerSimilar games →
  3. 3
    LINOVICTUS — Steam game cover

    LINOVICTUS

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

    Fight through waves of enemies across shifting arenas, buy upgrades between stages, invest in new ships, research permanent upgrades between runs, and compete on the global leaderboards in this blood-pumping twin stick shooter.

    2026ActionIndie6.79 USDSingle-playerSimilar games →
  4. 4
    Space Warpster — Steam game cover

    Space Warpster

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

    A fast-paced retro arcade shooter inspired by classic 1980s side-scrolling space combat. Weave through organic obstacles, survive relentless enemy waves, and defeat powerful end-level bosses in a pure, skill-driven singleplayer experience.

    2026ActionIndie4.24 USDSingle-playerSimilar games →
  5. 5
    Martian Invaders — Steam game cover

    Martian Invaders

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

    WE HAVE ALIENS, YOU DON'T—Blast Martian invaders and flying saucers across 30 stages with robotic voice effects. Use your destructible shield, rescue army men for bonus points, and chase the high score.

    2022ActionIndie0.99 USDSingle-playerSimilar games →
  6. 6
    Invaders from the Third Dimension — Steam game cover

    Invaders from the Third Dimension

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

    A retro space shooter with a twist - now you can rotate your ship and aim diagonally at enemies, adding a whole new dimension to the shoot 'em up genre.

    2023ActionIndieCasual0.99 USDSingle-playerSimilar games →
  7. 7
    AST-Hero — Steam game cover

    AST-Hero

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

    Fight for survival in this top-down shoot ‘em up in space, featuring unique hand-drawn visuals and sounds. It offers a challenging experience that is easy to learn, but difficult to master.

    2022ActionIndieCasual4.99 USDSingle-playerSimilar games →
  8. 8
    GUNPIG: Firepower For Hire — Steam game cover

    GUNPIG: Firepower For Hire

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

    Sci-fi top-down twin-stick shooter with 9 weapons, 3 alts and secret hidden collectibles!

    2020ActionIndie0.99 USDSingle-playerSimilar games →