IMHO.

Single-player games like Idle Expanse

Below are 9 single-player Steam games similar to Idle Expanse, 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 Expanse page.

Ranked picks

  1. 1
    Ducky Clicker Idle Game — Steam game cover

    Ducky Clicker Idle Game

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    Discover the universe of Ducky Clicker, an idle game full of unique rubber ducks. Click, expand your collection, and unlock divine powers, quantum ducks, and more. Rule the world of ducks as you ascend to infinity!

    2025StrategyIndieSimulation4.99 USDSingle-playerSimilar games →
  2. 2
    Go To Hell Must — Steam game cover

    Go To Hell Must

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    Want to decide where mortals go when they die? Welcome to hell! With one click, you can decide whether mortals should go to heaven or stay in hell.

    2024StrategyIndieSimulation5.99 USDSingle-playerSimilar games →
  3. 3
    Lazy Galaxy 2 — Steam game cover

    Lazy Galaxy 2

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    Lazy Galaxy 2 is an idle/clicker game with base-building and RTS elements. Lead an evil (albeit lazy) alien race to conquer the universe! Expand your base, fight vicious foes, and conquer the galaxies. Acquire combat experience and convert into candy, the most precious alien resource!

    2022StrategyIndieRPG7.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Boba Simulator : Idle Shop Management — Steam game cover

    Boba Simulator : Idle Shop Management

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    Boba Tea shop simulator. Manage recipe, stock and customer satisfaction.

    2022StrategyIndieSimulation3.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Starvester — Steam game cover

    Starvester

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Casual with Idle Expanse.

    A short incremental game about expanding a star-system wide factory to build giant megastructures in space. Deploy swarms of drones, mine resources, unlock upgrades and harvest the power of the stars!

    2026StrategySimulationCasual6.29 USDSingle-playerSimilar games →
  6. 6
    SPORE™ — Steam game cover

    SPORE™

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy with Idle Expanse.

    Be the architect of your own universe with Spore, an exciting single-player adventure. From Single Cell to Galactic God, evolve your creature in a universe of your own creations.

    2008ActionStrategyAdventure4.99 USDSingle-playerSimilar games →
  7. 7
    Clicker Heroes — Steam game cover

    Clicker Heroes

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    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.

    2015StrategyIndieAdventureFreeSingle-playerSimilar games →
  8. 8
    Void Miner – Incremental Asteroids Roguelite — Steam game cover

    Void Miner – Incremental Asteroids Roguelite

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Expanse.

    Blast. Collect. Upgrade. Repeat. Void Miner is a retro-inspired roguelite asteroid shooter where you pilot a space ship and manage an automated tower to destroy endless fields of chaos. Dodge, blast, and harvest your way through waves of asteroids in a fast-paced loop of destruction and progression.

    2025ActionStrategyIndie5.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Soda Dungeon — Steam game cover

    Soda Dungeon

    Single-player alternative to Idle Expanse — playable solo, no multiplayer required. Shares RPG and Free To Play with Idle Expanse.

    Pop the top on some legendary action with Soda Dungeon, the fresh and fizzy hit mobile RPG adventure, now available on your desktop! Manage your team as you raid the local dungeons, upgrade your tavern, and attract new party members. Gold, legendary items, and more await you.

    2017RPGFree To PlayCasualFreeDeck PlayableSingle-playerSimilar games →