IMHO.

Free games like Caves Of Mars

Below are 8 free-to-play Steam games similar to Caves Of Mars, 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 Caves Of Mars page.

Ranked picks

  1. 1
    The Expendabros — Steam game cover

    The Expendabros

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Action and Indie with Caves Of Mars.

    The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

    2014ActionIndieAdventureFreeDeck VerifiedFree to playSimilar games →
  2. 2
    UNBEATABLE [white label] — Steam game cover

    UNBEATABLE [white label]

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Action and Indie with Caves Of Mars.

    A young girl learns a song. An exclusive side-story set in the world of D-CELL GAMES' upcoming rhythm-adventure.

    2021ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  3. 3
    Disfigure — Steam game cover

    Disfigure

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Action and Indie with Caves Of Mars.

    Disfigure is a grim-dark action rogue-like where you battle relentless hordes of monsters lurking in the shadows. Unlock powerful weapons, craft god-like builds with hundreds of upgrades, slay colossal bosses, and push your limits in intense 20–30 minute survival runs!

    2023ActionIndieFreeDeck PlayableFree to playSimilar games →
  4. 4
    The Lab — Steam game cover

    The Lab

    Free-to-play alternative to Caves Of Mars — 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 →
  5. 5
    Princess Remedy in a World of Hurt — Steam game cover

    Princess Remedy in a World of Hurt

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Action and Indie with Caves Of Mars.

    Remedy, a recent graduate from the Saturnian healing school, must descend to Hurtland and use her powers to heal everyone from stray ducks to dark lords, and finally cure the ailing Prince Hingst. It's a short, whimsical adventure with plenty of heart(s).

    2016ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  6. 6
    Epic Battle Fantasy 3 — Steam game cover

    Epic Battle Fantasy 3

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Indie and Adventure with Caves Of Mars.

    Epic Battle Fantasy 3 is a silly turn-based JRPG, full of useless NPCs, rabid cats, childish humor, unreasonably large weapons, anime boobs, and other nonsense. And it's totally free!

    2016IndieAdventureRPGFreeDeck PlayableFree to playSimilar games →
  7. 7
    South Scrimshaw, Part One — Steam game cover

    South Scrimshaw, Part One

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Indie with Caves Of Mars.

    South Scrimshaw is the story of a newborn whale in a vast alien ocean. It is a richly illustrated experimental visual novel, written in the style of a nature documentary.

    2023IndieCasualFreeDeck PlayableFree to playSimilar games →
  8. 8
    The Riftbreaker: Prologue — Steam game cover

    The Riftbreaker: Prologue

    Free-to-play alternative to Caves Of Mars — no purchase or trial window. Shares Action and Indie with Caves Of Mars.

    The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.

    2020ActionStrategyIndieFreeDeck PlayableFree to playSimilar games →