IMHO.

Free games like Space Nature Attack Tower Defense

Below are 8 free-to-play Steam games similar to Space Nature Attack Tower Defense, 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 Space Nature Attack Tower Defense page.

Ranked picks

  1. 1
    Control, I'm Not Coming Back — Steam game cover

    Control, I'm Not Coming Back

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    Control, I'm Not Coming Back is a short and emotional narrative game about a lost astronaut searching for a reason to keep going forward while facing the emptiness of space. Inspired by the Hopecore aesthetic, it’s a story about positivism, friendship and our human connection with Voyager 1.

    2026IndieAdventureFree To PlayFreeFree to playSimilar games →
  2. 2
    OnlyCans: Thirst Date — Steam game cover

    OnlyCans: Thirst Date

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    Feel The Fizz Inside You™ with the brand new Shize™ Collection!

    2021IndieSimulationFree To PlayFreeFree to playSimilar games →
  3. 3
    Landfall Archives — Steam game cover

    Landfall Archives

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Strategy and Indie with Space Nature Attack Tower Defense.

    Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!

    2023ActionStrategyIndieFreeFree to playSimilar games →
  4. 4
    SuchArt: Creative Space — Steam game cover

    SuchArt: Creative Space

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!

    2021ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
  5. 5
    Samorost 1 — Steam game cover

    Samorost 1

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    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 →
  6. 6
    DOGWALK — Steam game cover

    DOGWALK

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    Explore a hand-crafted winter forest as a big adorable dog and a little kid in tow. A short, free, open source project brought to you by Blender Studio.

    2025IndieFree To PlayCasualFreeDeck PlayableFree to playSimilar games →
  7. 7
    South Scrimshaw, Part One — Steam game cover

    South Scrimshaw, Part One

    Free-to-play alternative to Space Nature Attack Tower Defense — no purchase or trial window. Shares Indie with Space Nature Attack Tower Defense.

    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 Space Nature Attack Tower Defense — no purchase or trial window. Shares Strategy and Indie with Space Nature Attack Tower Defense.

    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 →