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Sink ships the hard way, one plank at a time. Arc your shot, tear the sails, set the deck alight, then charge every gun on the flank and fire them as one. Free to play.
Mac · Oct 29, 2026
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · Oct 29, 2026
Worldwide · Exact date · Full release · IGDB
Catalog sources
36 achievements available.

Buy gold for the first time.
LockedSteam

Buy a pack from the shop.
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Trade gold for silver on the Resources shelf.
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Clear every campaign battle on Brutal.
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Clear every campaign battle on Hard.
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Clear every campaign battle on Normal.
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Finish an arena duel.
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Win an arena duel.
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Send your first enemy ship to the bottom.
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Own 10 ships.
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Own 100 ships.
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Own 25 ships.
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Own 5 ships.
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Own 50 ships.
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Fit one ship with six 7-star parts.
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Move gold from Ship Busters to another INVO game.
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Own 5 Legendary ships.
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Beat a sea boss without losing a single gun station.
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Touch off an enemy magazine.
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Reach 170 campaign points and claim the capstone ship.
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Finish a ship with a ramming charge.
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Conquer Sea 1: The Coral Shallows.
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Conquer Sea 2: The Drowned Graveyard.
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Conquer Sea 3: The Emerald Wilds.
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Conquer Sea 4: The Gilded Coast.
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Conquer Sea 5: The Cinder Isle.
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Conquer Sea 6: The Frozen Reach.
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Conquer Sea 7: The Tempest Wastes.
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Send gold to another captain.
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Launch a ship of your own design from the drydock.
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Fire a ship’s signature special.
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Add a 7-star part to your armoury.
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Complete the 30-day voyage and claim the Steam Hammer.
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Complete the 60-day voyage and claim the Bright Eagle.
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Complete the 90-day voyage and claim The Celestial.
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Claim the day-7 login reward: the Lightning Jewel.
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Community notes