IMHO.

Single-player games like Slay All Bosses: Idle

Below are 8 single-player Steam games similar to Slay All Bosses: Idle, 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 Slay All Bosses: Idle page.

Ranked picks

  1. 1
    Monsters Idle RPG — Steam game cover

    Monsters Idle RPG

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Adventure with Slay All Bosses: Idle.

    Monsters Idle RPG is a cozy and relaxing idle game where you collect monsters, deploy them in battles, gather resources, and sell them to earn profits! Explore Arcanium as you advance from a basic starter monster to your favorite companion by expanding your collection.

    2023StrategyIndieAdventure2.99 USDSingle-playerSimilar games →
  2. 2
    Monster Hunting: Incremental Grind Forever — Steam game cover

    Monster Hunting: Incremental Grind Forever

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Simulation with Slay All Bosses: Idle.

    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 USDSingle-playerSimilar games →
  3. 3
    IDLE BOSS RUSH — Steam game cover

    IDLE BOSS RUSH

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Simulation with Slay All Bosses: Idle.

    Slay giant bosses and turn the hollow wasteland into the almighty kingdom! Endlessly rewarding incremental game where you collect fountains of rare loot, unleash crazy combos and watch the monsters fall under your knees. Boss Rush that keeps on going when you're gone!

    2025StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    God Awe-full Clicker — Steam game cover

    God Awe-full Clicker

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Adventure with Slay All Bosses: Idle.

    God Awe-Full Clicker is an Endless Dungeon Clicker/Idle game full of Greek Mythology and Epic Battles with RPG style aspects.

    2018ActionStrategyIndieFreeSingle-playerSimilar games →
  5. 5
    Brick Breaker — Steam game cover

    Brick Breaker

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Casual with Slay All Bosses: Idle.

    A game about destroying bricks and stop them from spreading. Unlock balls with unique attacks that help you get further and defeat all 14 bosses. Build up a base, gather resources and use them to improve your stats. Dont let the bricks touch you!

    2022StrategyIndieCasual0.99 USDSingle-playerSimilar games →
  6. 6
    Tower Walker: MMO Grind Simulator — Steam game cover

    Tower Walker: MMO Grind Simulator

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Simulation and RPG with Slay All Bosses: Idle.

    Tower Walker is a fresh new type of addictive semi-idle auto-grinder rich with features, inspired by classic MMORPGS and RTS games with indirect control over your hero. The mysterious tower awaits!

    2023IndieSimulationRPG9.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Berserk B.I.T.S — Steam game cover

    Berserk B.I.T.S

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Simulation with Slay All Bosses: Idle.

    Berserk B.I.T.S is an idle-rpg, auto-battler, chip-collecting game that runs on your desktop. Let your B.I.T do battle and collect items. Collect rare chips and build your deck! Customize and Level up to take down intense Virus bosses as you unravel the mysteries behind the attacks on the Net.

    2025StrategyIndieSimulation5.73 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Gamblers Table — Steam game cover

    Gamblers Table

    Single-player alternative to Slay All Bosses: Idle — playable solo, no multiplayer required. Shares Strategy and Simulation with Slay All Bosses: Idle.

    Gamblers Table is an incremental game where you toss coins to earn money. Buy bigger and better coins, unlock upgrades and hire little helpers to automate the process and take care of all the busy flipping work for you. Simple. Satisfying. Strangely compelling...

    2026StrategyIndieSimulation6.99 USDDeck VerifiedSingle-playerSimilar games →