IMHO.

Single-player games like Deep Sea Fish: Hidden World

Below are 8 single-player Steam games similar to Deep Sea Fish: Hidden World, 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 Deep Sea Fish: Hidden World page.

Ranked picks

  1. 1
    Slots & Diapers — Steam game cover

    Slots & Diapers

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Strategy and Indie with Deep Sea Fish: Hidden World.

    Absurd incremental game where you turn even liquid assets into financial glory! Spin for jackpots and hire veteran gamblers to automate the madness. Use permanent upgrades and 'mishaps' to accelerate your progress! Simple. Messy. Addictive.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  2. 2
    Planet No More — Steam game cover

    Planet No More

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Strategy and Casual with Deep Sea Fish: Hidden World.

    Planet No More is an arcade-incremental game where you build a fleet to dynamically shatter celestials. With every weapon and fleet upgrade, you'll advance deep into the galaxy, strategically shattering planets to their cores to unlock the next celestial.

    StrategyCasualSingle-playerSimilar games →
  3. 3
    Sporbs — Steam game cover

    Sporbs

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Strategy and Indie with Deep Sea Fish: Hidden World.

    A relaxing incremental game where you harvest resources from alien organisms. Upgrade your extraction technology, discover unique abilities, manage resources, automate a factory and unlock new areas to maximise your yield.

    2026StrategyIndieSimulation3.49 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Dinosaurium — Steam game cover

    Dinosaurium

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Indie and Casual with Deep Sea Fish: Hidden World.

    Relax and collect over 500 unique dinosaurs in this cozy idle game. Watch hatchlings grow into towering giants in real-time, customize prehistoric habitats across 9 themed packs, and discover rare species from tiny raptors to mighty sauropods.

    2026IndieSimulationCasualSingle-playerSimilar games →
  5. 5
    IncreKnight — Steam game cover

    IncreKnight

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Strategy and Casual with Deep Sea Fish: Hidden World.

    An Incremental game about Slaying a Dragon.

    2026ActionStrategyAdventureSingle-playerSimilar games →
  6. 6
    Lepidarium — Steam game cover

    Lepidarium

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Indie and Casual with Deep Sea Fish: Hidden World.

    Relax and collect hundreds of unique butterflies and moths in this cozy idle game. Watch caterpillars transform from larva to chrysalis to winged beauty, customize lush greenhouses, and discover rare species from monarchs to atlas moths.

    2026IndieSimulationCasualSingle-playerSimilar games →
  7. 7
    Click-A-Duck — Steam game cover

    Click-A-Duck

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Indie and Casual with Deep Sea Fish: Hidden World.

    Turn a small duck pond into a chaotic, self-growing duck empire. Click, upgrade, and automate your way to explosive, unstoppable growth.

    2026IndieSimulationCasual2.09 USDSingle-playerSimilar games →
  8. 8
    Chillquarium — Steam game cover

    Chillquarium

    Single-player alternative to Deep Sea Fish: Hidden World — playable solo, no multiplayer required. Shares Casual with Deep Sea Fish: Hidden World.

    Chillquarium is a cozy and relaxing idle game. Buy fish and raise them in real time, then sell them to turn a profit! Customize your aquarium as you progress from a simple starter tank to your dream setup by filling your collection with rare exotic fish and ultra-rare color variants!

    2023SimulationCasual5.99 USDDeck PlayableSingle-playerSimilar games →
Single-Player Games Like Deep Sea Fish: Hidden World · imho.run