IMHO.

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
    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 →
  2. 2
    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 →
  3. 3
    Monster Hunting: Incremental Grind Forever — Steam game cover

    Monster Hunting: Incremental Grind Forever

    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 incremental adventure. Fight monsters, buy upgrades, recruit a party, craft equipment, join a faction, battle across different regions, and complete hundreds of rewards. Unlock a variety of fun features and use them to make your numbers go up!

    2024StrategyIndieSimulation4.99 USDDeck 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
    Crown Siege — Steam game cover

    Crown Siege

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

    A short incremental tower defense game centered around growing and strengthening armies, to defend your kingdom and stop endless waves of enemies.

    2026ActionStrategySimulationSingle-playerSimilar games →
  6. 6
    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.

    2026StrategyIndieCasual4.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Godsbane Idle — Steam game cover

    Godsbane 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.

    Godsbane Idle is a fresh idle take on games such as path of exile. It combines the hunt for powerful loot with idle systems to guarantee your progress even if time is short that day. It tries to stray away from linear paths and offers multiple ways to customize your equipment, skills and even more.

    2022IndieRPGFree To PlayFreeDeck PlayableSingle-playerSimilar games →
  8. 8
    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 →
  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
    Sushi Idle Clicker — Steam game cover

    Sushi Idle Clicker

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

    A relaxing idle/clicker game where you manage your own sushi restaurant. Start with basic ingredients, hire chefs to automate production, and upgrade your recipes. Reach level 7 to perform a rebirth and click your way to building the world's largest sushi empire.

    2026IndieSimulationCasual2.99 USDSingle-playerSimilar games →
  14. 14
    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 →