Last 7 days
Screenshots, achievements, specs, every price change and sale we've seen on Steam, and trading cards.
Loading from Steam…
Steam prices for United States (change the country in the top bar), and Steam keys from authorized stores.
Checking other stores…
Loading from Steam…
91% positive of 185 · Very Positive · Live from Steam
Loading reviews from Steam…
WWII tactical submarine combat! Take command of a U-boat prowling the Atlantic in search of enemy convoys to sink. Sneak past the escorts and torpedo the transports. Or surface and use your deck gun in a daring night attack.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 91% on 2026-11-01 → 91% today (185 reviews)
No authorized Steam key store lists this game right now.
Not tested by Valve yet. Results from Valve's own testing.
Valve hasn't published test details for this game.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Changes: • Fixed bug where shelled convoy ships (hit or near miss) would sometimes report incorrect player position to escorts (who would then race excitedly off to the completely wrong place). • Cleared leaderboards (due to difficulty change from above bug fi…
Changes: • Random Mission: Convoys will always have at least 3 transports (no more single-escort missions!) • Random Mission: Convoys will never be angled further than 90 degrees from player. • Fixed Challenge 2 (“surface attack, night”) so it’s actually at ni…
Fixes a bug where your sub would “pop” up or down when unpausing after leaving the game paused for a lengthy period. If the “pop” was downward, it could cause instant implosion, which most would consider a Bad Thing.
Fixes a bug where your sub would “pop” up or down when unpausing after leaving the game paused for a lengthy period. If the “pop” was downward, it could cause instant implosion, which most would consider a Bad Thing.
Just a small bug-fix for some devices that were unable to set new target destination on the War Patrol map.
Just a small bug-fix for some devices that were unable to set new target destination on the War Patrol map.
Changes: • Fixed bug where shelled convoy ships (hit or near miss) would sometimes report incorrect player position to escorts (who would then race excitedly off to the completely wrong place). • Cleared leaderboards (due to difficulty change from above bug fi…
Changes: • Random Mission: Convoys will always have at least 3 transports (no more single-escort missions!) • Random Mission: Convoys will never be angled further than 90 degrees from player. • Fixed Challenge 2 (“surface attack, night”) so it’s actually at ni…
Fixed a bug where you can suddenly get rammed by an invisible ship.
Version 1.7.1 has been released. • Enemy ships now collide with each other (but do not damage each other). • Enemy escorts no longer hold fire when another enemy ship is in line of fire. • Fixed shimmy when sub is moving at 16x time-scale. • Convoy ship start …
Version 1.6.9 has been released with a few bug fixes: • Sinking ships no longer collide with live ships • Fixed panning in chart view rotating 1p camera • Fixed Complete Medium Mission achievement • Fixed sunk tonnage stats not accumulating