By: John Goering
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A tactical, map-based WWII submarine sim set in the Pacific Theater: Approach, intercept, strike unseen, withdraw into the deep. With realistic instruments, a Torpedo Data Computer (TDC), and including a full campaign with missions, patrol zones, radio intel, and more.
Linux · Aug 12, 2026
Worldwide · Exact date · Full release · IGDB
Mac · Aug 12, 2026
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · Aug 12, 2026
Worldwide · Exact date · Full release · IGDB
Catalog sources
32 achievements available.

Successfully complete the Advanced Tutorial.
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Score at least 700 points in AOB Trainer.
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Score at least 900 points in AOB Trainer.
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Score at least 950 points in AOB Trainer.
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Score at least 800 points in AOB Trainer.
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Successfully complete the Basic Tutorial.
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Survive an encounter in which two destroyers actively hunt you.
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Sink a ship without surfacing or using the periscope or binoculars during the encounter.
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Sink an enemy destroyer.
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Successfully complete the Campaign Tutorial.
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Sink five ships in a single tactical encounter.
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Win 20 games of cribbage.
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Sink an enemy tanker.
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Transmit 25 patrol reports.
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Sink a ship during a squall.
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Sink your first enemy ship during a campaign.
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Win a game of cribbage.
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Sink a ship and leave the tactical encounter without being detected.
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Sink 50,000 tons during a single patrol.
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Evade 25 depth charges during a campaign career.
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Complete a lifeguard rescue mission.
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Hit a ship with a torpedo after a run of more than 2,500 yards during a campaign encounter.
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Complete ten war patrols.
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Complete your patrol orders and return safely to base.
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Hit two different ships within 10 seconds during a campaign patrol encounter.
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Return to base with at least 50% structural damage.
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Travel 10,000 nautical miles during a campaign career.
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Travel 1,000 nautical miles during a campaign career.
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Sink 100,000 tons during a campaign career.
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Sink 500,000 tons during a campaign career.
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Hit three different ships within 10 seconds during a campaign patrol encounter.
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Survive on active duty until hostilities cease.
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