IMHO.

Free games like Planet Smasher

Below are 8 free-to-play Steam games similar to Planet Smasher, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Planet Smasher page.

Ranked picks

  1. 1
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Planet Smasher — no purchase or trial window.

    Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!

    2016Free To PlayFreeFree to playSimilar games →
  2. 2
    Samorost 1 — Steam game cover

    Samorost 1

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Indie and Casual with Planet Smasher.

    Explore the beginnings of the Samorost series in the space gnome’s original bite-sized adventure, formerly released in 2003. Now with remastered sounds, enhanced graphics, and new music by Floex.

    2021IndieAdventureCasualFreeFree to playSimilar games →
  3. 3
    Sprout — Steam game cover

    Sprout

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Strategy and Indie with Planet Smasher.

    Embark on a casual, botanical-puzzle-adventure. Make friends, learn new skills, solve puzzles, and become the mighty oak that you were always meant to be.

    2018StrategyIndieAdventureFreeDeck VerifiedFree to playSimilar games →
  4. 4
    Learn to Fly 3 — Steam game cover

    Learn to Fly 3

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Strategy and Indie with Planet Smasher.

    Build your spaceship from scratch, earn funds and invest them into building a bigger, better spaceship as you try and fly your way up to space!

    2017ActionStrategyIndieFreeDeck PlayableFree to playSimilar games →
  5. 5
    Transformice — Steam game cover

    Transformice

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Indie with Planet Smasher.

    Transformice is an MMO platformer about dozens of mice running to bring back the cheese! Will the almighty Shaman help you or just ruin everything? Millions of levels, hectic physics, skill trees, and more importantly... hats!

    2015IndieMassively MultiplayerFree To PlayFreeDeck PlayableFree to playSimilar games →
  6. 6
    Endless Sky — Steam game cover

    Endless Sky

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Indie with Planet Smasher.

    Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.

    2015ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  7. 7
    Antimatter Dimensions — Steam game cover

    Antimatter Dimensions

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Strategy and Indie with Planet Smasher.

    Earn antimatter through dimensions! Gain Infinite antimatter to collapse the universe!

    2022StrategyIndieFree To PlayFreeDeck PlayableFree to playSimilar games →
  8. 8
    Sunrider: Mask of Arcadius — Steam game cover

    Sunrider: Mask of Arcadius

    Free-to-play alternative to Planet Smasher — no purchase or trial window. Shares Strategy and Indie with Planet Smasher.

    As Captain Kayto Shields, embark on a galactic voyage of heroism and survival. With his home world destroyed and his nation conquered, the inexperienced Captain Shields, and his newly minted vessel, the Sunrider, are left as the only hope against a galactic evil intent on subjugating all sentient life.

    2014StrategyIndieRPGFreeDeck VerifiedFree to playSimilar games →