IMHO.

Single-player games like Slime Reaper

Below are 10 single-player Steam games similar to Slime Reaper, 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 Slime Reaper page.

Ranked picks

  1. 1
    Karma Keepers — Steam game cover

    Karma Keepers

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    A chill idle/incremental strategy game where you restore souls, build a Faith economy, automate more of your realm, and rebirth for permanent progress before corruption takes over

    2026StrategyIndieSimulation2.99 USDSingle-playerSimilar games →
  2. 2
    My Army Getting Stronger — Steam game cover

    My Army Getting Stronger

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    A short relaxing incremental auto-battler where you grow an unstoppable war machine and grind your way forward through enemy territory. No stress, no micromanagement — just growth, upgrades, and glorious mass battles.

    2026StrategyIndieCasualSingle-playerSimilar games →
  3. 3
    Resettle — Steam game cover

    Resettle

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    Resettle is a deep incremental city builder where you develop settlements on islands. Strategically place buildings to maximize resource production, explore 10 different upgrade systems, and create a thriving island city.

    2026StrategyIndieCasualSingle-playerSimilar games →
  4. 4
    Build a Cat Tower to reach the Fish — Steam game cover

    Build a Cat Tower to reach the Fish

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    A short incremental game about building a Cat Tower to reach the Fish. Unlock new cats, each with their own color and special ability. Stack them higher and faster for even tastier fish.

    IndieCasualSingle-playerSimilar games →
  5. 5
    Bills Must Be Paid — Steam game cover

    Bills Must Be Paid

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie with Slime Reaper.

    You're broke, smash piggy banks, bills must be paid. A short active incremental game. Get money, upgrade, and get debt free!

    2026ActionStrategyIndie6.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Crownhold — Steam game cover

    Crownhold

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie with Slime Reaper.

    Noble Rulers — grow your realm and expand your castle in this short incremental game! Manage resources, discover foreign lands and build up an army to lay siege to your enemies.

    2026StrategyIndie5.94 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Increbraintal — Steam game cover

    Increbraintal

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Casual with Slime Reaper.

    Protect your brain from viruses in Increbraintal, an incremental auto battler. Build your team and unlock upgrades in the Skill Tree to eliminate the contamination taking over the body.

    2026StrategySimulationCasual2.99 USDSingle-playerSimilar games →
  8. 8
    Garbage Growth — Steam game cover

    Garbage Growth

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    Garbage Growth is a short incremental trash game about collecting people's trash, bananas and even babies, to make money and pollute the world even more. Hire rats, grow your pollution, and make everything worse!

    2026IndieSimulationCasual4.49 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Defenders Guild — Steam game cover

    Defenders Guild

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie with Slime Reaper.

    Defenders Guild is a classic tower defense game. Create different strategies for each map, choose a team of adventurers that best fit your playstyle. Leave them free or assign each one priority enemies.

    2023ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  10. 10
    Roll & Reign — Steam game cover

    Roll & Reign

    Single-player alternative to Slime Reaper — playable solo, no multiplayer required. Shares Indie and Casual with Slime Reaper.

    Roll & Reign is a turn-based roguelike deckbuilder. Build a city from scratch while paying tribute to the emperor. Manage your dice rolls, upgrade or modify them, and choose the most suitable buildings for your strategy.

    2026StrategyIndieSimulation4.99 USDSingle-playerSimilar games →