IMHO.

Single-player games like Don’t Idle: TD

Below are 9 single-player Steam games similar to Don’t Idle: TD, 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 Don’t Idle: TD page.

Ranked picks

  1. 1
    Pacremental — Steam game cover

    Pacremental

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    Pacremental is a incremental game about opening packs, unlocking weapon cards, evolve them and automating your progress. Collect rare artifacts, combine them with weapons, and push through increasingly difficult waves. Build tower your own way.

    2026IndieSimulationCasual3.59 USDSingle-playerSimilar games →
  2. 2
    Don't Wake the Queen — Steam game cover

    Don't Wake the Queen

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required.

    Protect the peaceful sleep of Your Meowness in this ever-growing incremental tower defense. Place defenders, build your own path, unlock new skills and units, infinitely upgrade EVERYTHING and optimize your strategy.

    2026StrategyIndieSingle-playerSimilar games →
  3. 3
    Thousand Floors — Steam game cover

    Thousand Floors

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    Tower Climbers carry amber light; allies follow through misty pagodas in an endless Eastern tower. Thousands Floors blends side-view pixel art with hands-off combat—summon, upgrade, and let them climb. Grow via allies, floor lockdown, and relics.

    2026StrategyIndieCasual6.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    This Isn't Just Tower Defense — Steam game cover

    This Isn't Just Tower Defense

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    Defend your base with placeable towers that can be upgraded endlessly. Automate your production and make sure there's enough power to keep everything running.

    2025StrategyCasual6.99 USDSingle-playerSimilar games →
  5. 5
    Infinite Ruins — Steam game cover

    Infinite Ruins

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    An incremental mining game where you manage golems, destroy blocks, unlock upgrades, and descend infinitely in search of ever more valuable resources.

    2026StrategyIndieCasual5.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Refence — Steam game cover

    Refence

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    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 →
  7. 7
    Bao Bao's™ Cozy Laundromat — Steam game cover

    Bao Bao's™ Cozy Laundromat

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    Relax in Bao Bao’s Cozy Laundromat, an idle game where you join Bao Bao, a charming panda, in creating the coziest laundromat. Purchase colorful washing machines, add delightful decorations, and hire panda helpers. Watch your cozy laundromat bustle with life, even when you’re not around!

    2025StrategyIndieSimulation3.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Corner Market — Steam game cover

    Corner Market

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    A relaxing idle market simulator that sits at the corner of your screen while you do other things.

    2026IndieCasualEarly Access3.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Li O's Online World — Steam game cover

    Li O's Online World

    Single-player alternative to Don’t Idle: TD — playable solo, no multiplayer required. Shares Casual with Don’t Idle: TD.

    《Computer Dungeon》 Roguelike strategy where an awakened AI evolves in a computer world. Explore hardware/system dungeons, combine tech-tree talents for unique effects. Ultimate goal: Upload to an independent device for survival.

    2025StrategyIndieCasual1.99 USDSingle-playerSimilar games →