Single-player games like Harpooner
Below are 8 single-player Steam games similar to Harpooner, 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 Harpooner page.
Ranked picks
- 1
FishPond
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Indie and Simulation with Harpooner.
Build a living pond where every fish has a unique genetic code. Breed for rare traits, balance oxygen and hunger, unlock new species, and watch your ecosystem compose its own soundtrack in real time. Part sim, part idle game, part science experiment gone beautifully wrong.
- 2
Fish to Cats: Catch & Feed
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Indie and Casual with Harpooner.
Loads of fish! Loads of cats! Sail out to sea, charm every furball on Cat Island with fresh catch. Live your cozy ocean cat life!
- 3
Incresleeper
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Strategy and Simulation with Harpooner.
A short, active incremental game about fighting insomnia. Go to bed, bust hordes of demons in your dreams and get powerful upgrades to become a master at sleeping.
- 4
Catnip Cosmos
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Strategy and Casual with Harpooner.
Shoot. Upgrade. Incrementally progress further. Pilot cat-operated spaceships on timed Zoomies runs in this space shooter. Combine pilots for powerful synergies, defeat boss challenges to unlock new weapons and improve exponentially.
- 5
The Fishercat
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Action and Casual with Harpooner.
Cats love fish so much, they started fishing.
- 6
Hex Core
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Action and Strategy with Harpooner.
Hex Core is a short, incremental clicker-style defense game where you help PeteOS hold back waves of viruses until you can wipe them out for good. Spend resources to unlock a huge spread of upgrades, new mechanics, weapons, and research.
- 7
Magical Girl: incremental gaiden
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Action and Indie with Harpooner.
Short incremental Bullet Hell about Magical Girl! Fight against Shadows, gather resources, upgrade skill tree and defeat all the Witches to save humanity!
- 8
Screen Survivors
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Strategy and Simulation with Harpooner.
An idle survivor-like that sits in the corner of your screen.