IMHO.

Single-player games like Idle Monster TD: Evolved

Below are 11 single-player Steam games similar to Idle Monster TD: Evolved, 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 Monster TD: Evolved page.

Ranked picks

  1. 1
    Idle Hero TD - Tower Defense — Steam game cover

    Idle Hero TD - Tower Defense

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing!

    2024ActionStrategyIndieFreeDeck PlayableSingle-playerSimilar games →
  2. 2
    Monster Hunting: Incremental Grind Forever — Steam game cover

    Monster Hunting: Incremental Grind Forever

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    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 →
  3. 3
    Starfend — Steam game cover

    Starfend

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    Pick cards, equip stones, chain color synergies — and survive endless meteor waves. A 3D sci-fi tower defense roguelite where every run builds different and hits harder.

    2023ActionStrategyIndie9.99 USDSingle-playerSimilar games →
  4. 4
    Advent Arena — Steam game cover

    Advent Arena

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    A card-game/tower-defense hybrid. Play solo or with a partner to level up your hero, summon creatures, and cast spells to take down your foes in online multiplayer. Employ any of many diverse strategies in quick matches. Collect and deploy every unique and quirky hero and card for free.

    2026StrategyIndieFree To PlayFreeSingle-playerSimilar games →
  5. 5
    Crown Siege — Steam game cover

    Crown Siege

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Casual with Idle Monster TD: Evolved.

    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
    Idle TD: Heroes vs Zombies — Steam game cover

    Idle TD: Heroes vs Zombies

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    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 →
  7. 7
    All Aboard! The Train Defense Express — Steam game cover

    All Aboard! The Train Defense Express

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    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 →
  8. 8
    无限投影2 — Steam game cover

    无限投影2

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    In the novel and anime worlds, players could collect apostles and fight against the forces of chaos. Build the legendary team and conquer all the multiverses!

    2023StrategyIndieSimulation3.99 USDSingle-playerSimilar games →
  9. 9
    Melvor Idle — Steam game cover

    Melvor Idle

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Indie and Casual with Idle Monster TD: Evolved.

    Inspired by RuneScape, Melvor Idle takes the core of what makes an adventure game so addictive and strips it down to its purest form! This is a feature-rich, idle/incremental game combining a distinctly familiar feel with a fresh gameplay experience. Maxing 20+ skills has never been more zen.

    2021IndieAdventureRPG9.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Clicker Heroes 2 — Steam game cover

    Clicker Heroes 2

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    Clicker Heroes 2 is an endless incremental idle Action RPG. Embark on a never-ending journey to the top right of your screen.

    2018ActionStrategyIndieDeck PlayableSingle-playerSimilar games →
  11. 11
    Idle Hero — Steam game cover

    Idle Hero

    Single-player alternative to Idle Monster TD: Evolved — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD: Evolved.

    Idle Hero is a reference game in its genre. No endless walkthrough and unreachable goals. Everything is completable with guaranteed fun, pleasure and challenging but fair tasks.

    2022StrategyIndieSimulation0.99 USDDeck PlayableSingle-playerSimilar games →