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
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.
- 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
Incrempire
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Action and Strategy with Harpooner.
Defend. Upgrade. Dominate. A relaxing incremental base-defense game, packed with powerful skills and a deep skill tree.
- 4
Incremental Infinity
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Strategy and Casual with Harpooner.
Explore an infinite, procedurally generated skill tree as you defend yourself against ever-growing waves of numbers. Play in full screen or as a side-window companion while doing other things.
- 5
Soul Reaper: Endless Harvest
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Action and Strategy with Harpooner.
Reap souls. Open the portal. Extract or risk it all. A skill-based bullet heaven where every battle is a short harvest. Souls reaped before the portal are safe, souls after are at risk. Spend them in a permanent skill tree, beat the level, push to the next.
- 6
Crystal Ascend
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Simulation and Casual with Harpooner.
A simple incremental game where you nurture crystal elementals by destroying floating crystals and harvesting aether. Upgrade the skill tree, unlock new abilities to gather resources faster, and build your ultimate crystal companions.
- 7
Penguin Capitalism Simulator
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Indie and Simulation with Harpooner.
Games are too stressful ... so I made one that literally plays itself
- 8
Protect the Pit
Single-player alternative to Harpooner — playable solo, no multiplayer required. Shares Strategy and Simulation with Harpooner.
A short incremental clicker game that blends the strategy of tower defense with the depth of sprawling upgrade trees. Build your own winding mazes to repel the oncoming hordes!