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Single-player games like Idle Hero TD - Tower Defense

Below are 14 single-player Steam games similar to Idle Hero TD - Tower Defense, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Idle Hero TD - Tower Defense page.

Ranked picks

  1. 1
    Samawa Idle — Steam game cover

    Samawa Idle

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Idle Hero TD - Tower Defense.

    Unleash the power of specialized towers to annihilate hordes of monsters in this idle game with roguelike elements. Collect gold, level up your towers, face powerful bosses, and refine your strategy with an evolving skill tree.

    2023ActionStrategyIndie3.49 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    All Aboard! The Train Defense Express — Steam game cover

    All Aboard! The Train Defense Express

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    Protect the Infinite Power Generator by looping around the train tracks! Battle endless waves of enemies in this unique hybrid of auto-battler, survivor, tower defense, idle/clicker gameplay. How long can you survive?

    2025StrategyIndieSimulation4.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Monster Tiles TD: Tower Wars — Steam game cover

    Monster Tiles TD: Tower Wars

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Action and Strategy with Idle Hero TD - Tower Defense.

    Free Tower Defense game with unique roguelike elements. Custom base building mechanics allow you to create your own base and maze with tiles earned after each wave. Unleash a variety of monsters, each with its own evolution path and unique skills, and evolve them into legendary creatures.

    2024ActionStrategyIndieFreeDeck PlayableSingle-playerSimilar games →
  4. 4
    Idle TD: Heroes vs Zombies — Steam game cover

    Idle TD: Heroes vs Zombies

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    An endless Tower Defense game of epic heroes vs evil zombies. Unlock and upgrade countless Heroes, artifacts, and technologies to defend against the infinite zombie swarms. Strategize the most effective placement of Heroes to synergize their skills and abilities.

    2022StrategyIndieFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  5. 5
    Idle Monster TD: Evolved — Steam game cover

    Idle Monster TD: Evolved

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    Evolve epic monsters and crush puny humans in this endless idle tower defense game! Unlock, upgrade, and evolve over 150 unique monsters and pets, ranging from cute and colorful flower creatures to epic fire breathing dragons, to assemble the ultimate team against the endless waves of enemies.

    2022StrategyIndieFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  6. 6
    Galaxy Idle Clicker — Steam game cover

    Galaxy Idle Clicker

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Indie and Free To Play with Idle Hero TD - Tower Defense.

    Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!

    2025IndieSimulationFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  7. 7
    Zero Stress King: Idle Defense — Steam game cover

    Zero Stress King: Idle Defense

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    A short relaxing incremental game disguised as a tower defense, but enemies can’t reach your walls. Thanks to lava.

    2026StrategyIndieCasual5.59 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Refence — Steam game cover

    Refence

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    Refence is a roguelite based idle defense game, where you can choose heroes and their traits, upgrade your castle, and manage resources to fend off enemies from the Demon Realm who are trying to attack your castle.

    2025StrategyIndieSimulation5.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    NGU IDLE — Steam game cover

    NGU IDLE

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Indie and Free To Play with Idle Hero TD - Tower Defense.

    NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!

    2019IndieAdventureSimulationFreeDeck PlayableSingle-playerSimilar games →
  10. 10
    Unnamed Space Idle — Steam game cover

    Unnamed Space Idle

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Free To Play and Casual with Idle Hero TD - Tower Defense.

    Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.

    2023SimulationFree To PlayCasualFreeDeck PlayableSingle-playerSimilar games →
  11. 11
    Bloons TD 6 — Steam game cover

    Bloons TD 6

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy with Idle Hero TD - Tower Defense.

    The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.

    2018Strategy13.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Cookie Clicker — Steam game cover

    Cookie Clicker

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    An idle game about making cookies! Originally released in 2013 on the web, and actively developed since then. This is the official version for Steam.

    2021StrategyIndieSimulation4.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Idle Clicker Tower — Steam game cover

    Idle Clicker Tower

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Indie and Casual with Idle Hero TD - Tower Defense.

    Idle Clicker Tower is a single-player idle tower defense with a retro neon aesthetic: defend your central tower, unlock new towers and abilities, grow your power, defeat waves of enemies and increasingly deadly bosses, and open packs to expand your card collection.

    2026IndieCasual3.59 USDSingle-playerSimilar games →
  14. 14
    Idle Monster TD — Steam game cover

    Idle Monster TD

    Single-player alternative to Idle Hero TD - Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Hero TD - Tower Defense.

    An endless Tower Defense game of epic Monsters vs evil War Machines. Unlock and upgrade tons of unique elemental Monsters (Water, Air, Earth, and Fire) to defend your home from an infinite swarm of robots. Strategize the most effective placement of Monsters to synergize their elemental abilities.

    2021StrategyIndieFree To PlayFreeDeck PlayableSingle-playerSimilar games →