IMHO.

Free games like Terrorformer TD

Below are 8 free-to-play Steam games similar to Terrorformer TD, 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 Terrorformer TD page.

Ranked picks

  1. 1
    Magic Archery — Steam game cover

    Magic Archery

    Free-to-play alternative to Terrorformer TD — no purchase or trial window.

    Train a commoner to become the greatest archer in this short incremental game! Increase your stats, gather wealth from quests, buy upgrades, and infuse your arrows with magic.

    2024IndieSimulationRPGFreeDeck PlayableFree to playSimilar games →
  2. 2
    Landfall Archives — Steam game cover

    Landfall Archives

    Free-to-play alternative to Terrorformer TD — no purchase or trial window. Shares Strategy with Terrorformer TD.

    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 →
  3. 3
    DOGWALK — Steam game cover

    DOGWALK

    Free-to-play alternative to Terrorformer TD — no purchase or trial window.

    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 →
  4. 4
    The Riftbreaker: Prologue — Steam game cover

    The Riftbreaker: Prologue

    Free-to-play alternative to Terrorformer TD — no purchase or trial window. Shares Strategy with Terrorformer TD.

    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 →
  5. 5
    Limbus Company — Steam game cover

    Limbus Company

    Free-to-play alternative to Terrorformer TD — no purchase or trial window.

    As the Executive Manager of Limbus Company, lead your group of twelve Sinners, venture into the buried facilities of Lobotomy Corporation, and lay claim on the Golden Boughs.

    2023FreeDeck PlayableFree to playSimilar games →
  6. 6
    Supermarket Together — Steam game cover

    Supermarket Together

    Free-to-play alternative to Terrorformer TD — no purchase or trial window.

    The multiplayer supermarket has arrived to your neighbourhood for free! Stock your shop space, unlock perks and franchises, hire employees or chase those pesky shoplifters. The more players, the more action!

    2024IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
  7. 7
    Minion Masters — Steam game cover

    Minion Masters

    Free-to-play alternative to Terrorformer TD — no purchase or trial window. Shares Strategy with Terrorformer TD.

    An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!

    2019ActionStrategyIndieFreeFree to playSimilar games →
  8. 8
    Bloons TD Battles 2 — Steam game cover

    Bloons TD Battles 2

    Free-to-play alternative to Terrorformer TD — no purchase or trial window. Shares Strategy with Terrorformer TD.

    From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!

    2021ActionStrategyIndieFreeDeck PlayableFree to playSimilar games →