IMHO.

Single-player games like Slot Theory

Below are 8 single-player Steam games similar to Slot Theory, 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 Slot Theory page.

Ranked picks

  1. 1
    Turn Based Boxing: Tactics - Legends Edition — Steam game cover

    Turn Based Boxing: Tactics - Legends Edition

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

    A tactical turn-based boxing simulation with (optional auto-battle) and perma-death. From your backyard to a world title. Recruit Boxers, Assign Perks, Train Stats, Build Synergies, Manage Injuries, Unlock strategies, Upgrade your Gym, Bribe the Commission and create roster of Boxing Champions.

    2025SportsStrategyIndie9.99 USDSingle-playerSimilar games →
  2. 2
    Seed World — Steam game cover

    Seed World

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

    Seed World is a game that aims to combine automation, conveyor belts, and level progression. The game simplifies automation 'construction' into a series of progress bars, with each progress producing or consuming resources, and players need to manage resources.

    2025StrategyIndieSimulation2.99 USDSingle-playerSimilar games →
  3. 3
    Zero Bugs Given — Steam game cover

    Zero Bugs Given

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

    Zero Bugs Given is a tower defense / roguelike game designed with the ambition of making every run different from the others. Every wave, a pair of bonus and malus will force you to adapt in the best way you can. Build your defense and try survive as long as you can!

    2026StrategyIndie9.90 USDSingle-playerSimilar games →
  4. 4
    BroomSweeper — Steam game cover

    BroomSweeper

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

    Minesweeper gone Rogue(like). Stock your cart with 150+ powerful items while avoiding impish Dust Bunnies. Dare yourself to climb all 16 floors of the ominous Tentateq Tower—but beware, 7 logic-twisting Hazardous Materials stand between you and janitorial glory. Can you keep your job until morning?

    2026StrategyIndieAdventure24.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Becoming Saint — Steam game cover

    Becoming Saint

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

    Choose your doctrine and preach across medieval Italy in this real-time strategy roguelike. Gather your diverse cast of followers, venture out to convince and convert new believers, conquer towns, and strive to become a saint in your lifetime—or die trying.

    2025StrategyIndieSimulation14.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    All Aboard! The Train Defense Express — Steam game cover

    All Aboard! The Train Defense Express

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

    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 →
  7. 7
    Wordatro! — Steam game cover

    Wordatro!

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

    Wordatro! fuses addictive word game with thrilling roguelite strategy! Spell high-scoring words, chain massive combos, and unlock game-changing bonuses. With 50+ unique upgrades and daily challenges, endless linguistic adventures await!

    2025StrategyIndie9.99 USDSingle-playerSimilar games →
  8. 8
    Luck be a Landlord — Steam game cover

    Luck be a Landlord

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

    Luck be a Landlord is a roguelike deckbuilder about using a slot machine to earn rent money and defeat capitalism. This game does not contain any real-world currency gambling or microtransactions.

    2023StrategyIndieSimulation3.99 USDDeck VerifiedSingle-playerSimilar games →