IMHO.

Free games like Machinery Defense

Below are 8 free-to-play Steam games similar to Machinery 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 Machinery Defense page.

Ranked picks

  1. 1
    Electoral Carnage — Steam game cover

    Electoral Carnage

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Early Access with Machinery Defense.

    Electoral Carnage is an absurd 2D fighting game featuring America's most famous (and infamous) politicians. If you don't download it you hate America. Also JFK can assassinate himself. What more do you need to know?

    2026ActionFree To PlayEarly AccessFreeDeck PlayableFree to playSimilar games →
  2. 2
    The Last Sovereign — Steam game cover

    The Last Sovereign

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Strategy with Machinery Defense.

    Explore a world torn between armies of lust and purity in which everything is more complex than it seems, deciding the fate of nations through might, politics, and finance. Every decision matters in an intricate saga that tracks thousands of variables.

    2025StrategyIndieAdventureFreeDeck VerifiedFree to playSimilar games →
  3. 3
    Limbus Company — Steam game cover

    Limbus Company

    Free-to-play alternative to Machinery Defense — 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 →
  4. 4
    AdVenture Capitalist — Steam game cover

    AdVenture Capitalist

    Free-to-play alternative to Machinery Defense — no purchase or trial window.

    Welcome, eager young investor, to AdVenture Capitalist! Arguably the world's greatest Capitalism simulator!

    2015IndieFree To PlayCasualFreeDeck PlayableFree to playSimilar games →
  5. 5
    Clicker Heroes — Steam game cover

    Clicker Heroes

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Strategy with Machinery Defense.

    Click your way through hordes of monsters, earn gold, and recruit quirky heroes with powerful skills. Progress even while you're idle, and watch the numbers climb into the absurd. It’s a never-ending journey of clicks, crits, and colossal damage.

    2015StrategyIndieAdventureFreeFree to playSimilar games →
  6. 6
    Minion Masters — Steam game cover

    Minion Masters

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Strategy with Machinery Defense.

    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 →
  7. 7
    Bloons TD Battles 2 — Steam game cover

    Bloons TD Battles 2

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Strategy with Machinery Defense.

    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 →
  8. 8
    Bloons TD Battles — Steam game cover

    Bloons TD Battles

    Free-to-play alternative to Machinery Defense — no purchase or trial window. Shares Strategy with Machinery Defense.

    Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.

    2016ActionStrategyFree To PlayFreeDeck PlayableFree to playSimilar games →