IMHO.

Single-player games like Fish Slayer

Below are 8 single-player Steam games similar to Fish Slayer, 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 Fish Slayer page.

Ranked picks

  1. 1
    Shrimp.io — Steam game cover

    Shrimp.io

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Strategy with Fish Slayer.

    A Shrimp Based Bullet Heaven. Kill creatures, Level up & pick from 3 upgrades to unalive thousands more.

    2024ActionStrategyIndieFreeDeck PlayableSingle-playerSimilar games →
  2. 2
    Overdrive Breakout — Steam game cover

    Overdrive Breakout

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Strategy with Fish Slayer.

    Control a rusted mech in a fast-paced top-down survival action game. Enter unknown areas, dodge enemy swarms, choose random weapons, skill upgrades, and passive modules, defeat bosses, unlock maps, and break through on the edge of overload.

    2026ActionStrategyIndie2.69 USDSingle-playerSimilar games →
  3. 3
    Underwater DuO — Steam game cover

    Underwater DuO

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Indie with Fish Slayer.

    In Underwater Duo, control a smashing turtle with your left hand and a blasting jellyfish with your right! Fight off waves of fierce fish, grow stronger, and see if your two hands can conquer the deep… or team up with a perfectly in-sync partner.

    ActionIndieCasualSingle-playerSimilar games →
  4. 4
    Rune Craft — Steam game cover

    Rune Craft

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Strategy with Fish Slayer.

    A horde-survival roguelite built around a rune-grid weapon system. Collect weapons, gems, and 100+ runes to reshape projectile behavior, elemental reactions, and weapon evolutions, forging a different screen-clearing build every run.

    2026ActionStrategyAdventureSingle-playerSimilar games →
  5. 5
    Vanquish Evil — Steam game cover

    Vanquish Evil

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Indie with Fish Slayer.

    Vanquish endless waves of challenging enemies in this fast-paced action! Combine upgrades to be even more powerful! Buy and equip Gear and Items for your customized builds and stats! Play as 6 different heroes in this Bullet Heaven vs Bullet Hell! Each hero has mechanically unique abilities!

    2026ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  6. 6
    The Last Admiral — Steam game cover

    The Last Admiral

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Strategy with Fish Slayer.

    Command a fleet of warships in turn-based tactical battles. Push through a procedural galaxy, win fights, upgrade your fleet, and grow your empire. Lose a run, keep your ships and upgrades. 4 factions, 7 ship classes, 4 sectors, and endless mode. You are the Last Admiral.

    2026ActionStrategyIndieSingle-playerSimilar games →
  7. 7
    Supercat Survivors — Steam game cover

    Supercat Survivors

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and Strategy with Fish Slayer.

    Meow! This is a cat-themed Survivor-like game where you control an adorable Supercat! Battle monsters to level up, collect items, upgrade weapons, and experiment with strategic builds to fight off invading creatures threatening Meow Star.

    2026ActionStrategyIndie5.59 USDSingle-playerSimilar games →
  8. 8
    King of Exams — Steam game cover

    King of Exams

    Single-player alternative to Fish Slayer — playable solo, no multiplayer required. Shares Action and RPG with Fish Slayer.

    King of Exams is a rogue-lite game where you play as a primary school student reliving your school journey.Prepare stationery for various exams,claim your mom’s back-to-school gift pack,face middle school and college entrance exams,join academic competitions,and strive to reach the peak of life.

    2026ActionRPGCasual1.49 USDSingle-playerSimilar games →