STEAMDB NEXUS

Steam app 1280780 · updated 12 Sep 2026, 19:07 UTC

War on the Sea

Command ships, submarines and aircraft in the South Pacific during WWII.

War on the Sea Steam header artwork
Killerfish GamesKillerfish Games
135playing now
14824-hour peak
850all-time peak
91average, last 30 days

The last 30 days

−0.6Gain−0.66%% gain154Peak

719 hourly samples, with the daily peak drawn over them. Weekends are shaded.

0428312516613 Aug18 Aug23 Aug28 Aug02 Sep07 Sep12 SepThursday 13 August 2026108 peakFriday 14 August 2026112 peakSaturday 15 August 2026134 peakSunday 16 August 2026154 peakMonday 17 August 2026117 peakTuesday 18 August 2026127 peakWednesday 19 August 2026125 peakThursday 20 August 2026101 peakFriday 21 August 2026120 peakSaturday 22 August 2026141 peakSunday 23 August 2026140 peakMonday 24 August 2026134 peakTuesday 25 August 2026124 peakWednesday 26 August 2026112 peakThursday 27 August 2026111 peakFriday 28 August 2026116 peakSaturday 29 August 2026123 peakSunday 30 August 2026132 peakMonday 31 August 2026106 peakTuesday 01 September 2026115 peakWednesday 02 September 2026110 peakThursday 03 September 2026120 peakFriday 04 September 2026118 peakSaturday 05 September 2026143 peakSunday 06 September 2026148 peakMonday 07 September 2026136 peakTuesday 08 September 2026114 peakWednesday 09 September 2026113 peakThursday 10 September 2026100 peakFriday 11 September 2026118 peakSaturday 12 September 2026148 peak
Daily peakEvery hourly sample

All time

68 months, February 2021 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

0230459689918Feb 2021Jan 2022Dec 2022Nov 2023Oct 2024Sep 2025Aug 2026February 2021850 monthly peakMarch 2021652 monthly peakApril 2021458 monthly peakMay 2021357 monthly peakJune 2021359 monthly peakJuly 2021353 monthly peakAugust 2021327 monthly peakSeptember 2021328 monthly peakOctober 2021483 monthly peakNovember 2021386 monthly peakDecember 2021308 monthly peakJanuary 2022335 monthly peakFebruary 2022249 monthly peakMarch 2022205 monthly peakApril 2022193 monthly peakMay 2022198 monthly peakJune 2022245 monthly peakJuly 2022338 monthly peakAugust 2022270 monthly peakSeptember 2022415 monthly peakOctober 2022333 monthly peakNovember 2022301 monthly peakDecember 2022281 monthly peakJanuary 2023302 monthly peakFebruary 2023258 monthly peakMarch 2023287 monthly peakApril 2023259 monthly peakMay 2023234 monthly peakJune 2023203 monthly peakJuly 2023229 monthly peakAugust 2023197 monthly peakSeptember 2023164 monthly peakOctober 2023195 monthly peakNovember 2023235 monthly peakDecember 2023279 monthly peakJanuary 2024260 monthly peakFebruary 2024226 monthly peakMarch 2024316 monthly peakApril 2024254 monthly peakMay 2024288 monthly peakJune 2024335 monthly peakJuly 2024362 monthly peakAugust 2024282 monthly peakSeptember 2024276 monthly peakOctober 2024248 monthly peakNovember 2024213 monthly peakDecember 2024213 monthly peakJanuary 2025207 monthly peakFebruary 2025224 monthly peakMarch 2025283 monthly peakApril 2025201 monthly peakMay 2025267 monthly peakJune 2025216 monthly peakJuly 2025219 monthly peakAugust 2025292 monthly peakSeptember 2025217 monthly peakOctober 2025239 monthly peakNovember 2025242 monthly peakDecember 2025314 monthly peakJanuary 2026328 monthly peakFebruary 2026274 monthly peakMarch 2026234 monthly peakApril 2026206 monthly peakMay 2026211 monthly peakJune 2026171 monthly peakJuly 2026182 monthly peakAugust 2026154 monthly peakSeptember 2026148 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

04998147197July 2026August 2026September 2026October 2026July 2026182 peak — daily detail belowAugust 2026154 peak — hourly detail belowSeptember 2026148 peak — hourly detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0499814719701 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 2026126 peakThursday 02 July 2026146 peakFriday 03 July 2026157 peakSaturday 04 July 2026172 peakSunday 05 July 2026182 peakMonday 06 July 2026155 peakTuesday 07 July 2026142 peakWednesday 08 July 2026145 peakThursday 09 July 2026145 peakFriday 10 July 2026132 peakSaturday 11 July 2026142 peakSunday 12 July 2026157 peakMonday 13 July 2026140 peakTuesday 14 July 2026145 peakWednesday 15 July 2026134 peakThursday 16 July 2026135 peakFriday 17 July 2026142 peakSaturday 18 July 2026160 peakSunday 19 July 2026153 peakMonday 20 July 2026133 peakTuesday 21 July 2026140 peakWednesday 22 July 2026137 peakThursday 23 July 2026121 peakFriday 24 July 2026112 peakSaturday 25 July 2026122 peakSunday 26 July 2026150 peakMonday 27 July 2026123 peakTuesday 28 July 2026121 peakWednesday 29 July 2026114 peakThursday 30 July 2026136 peakFriday 31 July 2026133 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 437 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

0428312516601 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 2026127 peakSunday 02 August 2026135 peakMonday 03 August 2026126 peakTuesday 04 August 2026113 peakWednesday 05 August 2026116 peakThursday 06 August 2026114 peakFriday 07 August 2026116 peakSaturday 08 August 2026111 peakSunday 09 August 2026142 peakMonday 10 August 2026119 peakTuesday 11 August 2026125 peakWednesday 12 August 2026115 peakThursday 13 August 2026110 peakFriday 14 August 2026112 peakSaturday 15 August 2026134 peakSunday 16 August 2026154 peakMonday 17 August 2026117 peakTuesday 18 August 2026127 peakWednesday 19 August 2026125 peakThursday 20 August 2026101 peakFriday 21 August 2026120 peakSaturday 22 August 2026141 peakSunday 23 August 2026140 peakMonday 24 August 2026134 peakTuesday 25 August 2026124 peakWednesday 26 August 2026112 peakThursday 27 August 2026111 peakFriday 28 August 2026116 peakSaturday 29 August 2026123 peakSunday 30 August 2026132 peakMonday 31 August 2026106 peak

September 2026

12 days as the curve, each the highest figure that day. Behind it, 282 hourly samples. Each dip is a night. Weekends are shaded.

0408012016001 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 2026115 peakWednesday 02 September 2026110 peakThursday 03 September 2026120 peakFriday 04 September 2026118 peakSaturday 05 September 2026143 peakSunday 06 September 2026148 peakMonday 07 September 2026136 peakTuesday 08 September 2026114 peakWednesday 09 September 2026113 peakThursday 10 September 2026100 peakFriday 11 September 2026118 peakSaturday 12 September 2026148 peak

October 2026

War on the Sea was released on 2 Feb, 2021.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 12 Sep 2026, 19:07 UTC
App ID
1280780
Last updated
27 Mar 2026 build 21123044
Developer
Killerfish Games
Publisher
Killerfish Games
Release date
2 Feb, 2021
Platforms
WindowsmacOS
Download size
1.87 GB1.89 GB
Install size
4.19 GB4.23 GB
Genres
Simulation, Strategy
Game modes
Single-player
Controller support
Unknown

Features & support

Steam features

Includes level editorFamily Sharing

Controllers & input

Accessibility

Popular tags

StrategyNavalSimulationWorld War IINaval CombatSingleplayerWarWargameIndieRTSMilitaryRealisticMultiplayerOpen WorldSubmarineReal Time Tactics
About this gameFull description from Steam
1942: The world is at war The Japanese Empire expands throughout the Pacific where Allied forces attempt to halt its spread. A desperate struggle for control of the Solomon Islands is now underway. How will you protect your transports as they deliver troops and supplies in the South Pacific? Will you deploy precious aircraft carriers to provide air cover? Do you screen the area with submarines? Or attempt to lure the enemy navy into a decisive surface engagement? Major Features: Real time naval combat Theatrical external-view game play Play as Allied Forces or Imperial Japan Over 50 classes of playable ships Dynamic campaign Tactical control of aircraft (not a flight simulator) Fight fires, counter flood compartments and repair ships Sink ships using realistic buoyancy physics Historical missions based on actual naval engagements
Content & age ratings2 regional ratings

Regional ratings

DEJUSl
IGRS3
System requirementsMinimum and recommended hardware

Minimum

Minimum: Requires a 64-bit processor and operating system OS: XP Processor: Intel Atom Memory: 4 GB RAM DirectX: Version 9.0c Storage: 4 GB available space

Recommended

Recommended: Requires a 64-bit processor and operating system OS: 7 Processor: Core i5 Memory: 4 GB RAM DirectX: Version 9.0c Storage: 6 GB available space

macOS

Minimum: OS: OS X Version 10.6.3 Processor: 1.6GHz (Dual Core) Intel CPU Memory: 4 GB RAM Graphics: Shader Model 3 Capable Graphics Card Storage: 4 GB available space Recommended: OS: OS X Version 10.6.3 Processor: 2.2GHz (Quad Core) Intel CPU Memory: 4 GB RAM Graphics: Shader Model 3 Capable Graphics Card Storage: 4 GB available space

Linux

Minimum: Recommended:
Supported languages1 languages
LanguageFull audio
English

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

50 developer announcements, Apr 2021 to Mar 2026 · times in UTC

March

  1. Improved Campaign Logistics LIVE

    Version 1.09a is now LIVE and features a major re-working of campaigns.Key new features are:Resource costs for rearming ships and replenishing aircraftReplenishment at seaExpanding number of ships allowed in a Task Force (for mods)Removing…

    Killerfish Games

December

  1. Campaign Logistics 2 (Beta)

    This update (version 1.09a) adds a few more new features and addresses some fixes/oversights from the 1.09 update.Key new features are:Improved cargo UIImproved Campaign UIRebalance of shore bombardmentsModding support to force various…

    Killerfish Games

November

  1. Improved Campaign Logistics (Beta)

    This update (version 1.09) features a major re-working of campaigns. In particular, we've been working closely with the modding community to integrate their revisions of campaign logistics as well as expand the game to better support…

    Killerfish Games

February

  1. Aircraft overhaul and strategic bombing update now available

    The recent aircraft performance overhaul and strategic bombing features are now available in the live version with this new update. Remember, if you want to maintain the version 1.08g7h2 prior to this last update to finish a campaign or…

    Killerfish Games

December

  1. BETA: Aircraft Overhaul & Strategic Bombing

    Beta continues to grow with a complete overhaul of aircraft flight characteristics along with the addition of strategic bombing in campaigns. The overhaul of aircraft flight performance was initiated by community members and we'd like to…

    Killerfish Games

October

  1. Expanded World & Destructible AAA

    Now in BETA, Version 1.08h2 adds terrain data for the North Atlantic, Mediterranean and Indian Ocean theatres as well as introduces destructible AAA mounts on ships. Several example campaign maps are also included to assist modders with…

    Killerfish Games

November

  1. Patch for Campaign Bugs

    This is a silent fix as it only contains text data file changes, the version number still reads 1.08g7h2 for this build. MODDERS; you will only need to update/integrate the modified text data files if applicable. This fix addresses several…

    Patch notes

August

  1. HE Shells and Campaign Improvements

    This update features a re-work of High Explosive shell behaviour, zooming of Tactical Map at mouse position as well as several improvements to Campaigns such as; - settings panel when starting a new campaign - ability to choose from…

    Killerfish Games

July

  1. Iowa, Essex and More!

    Version 1.08g6h3 is a major update that introduces; - Iowa and Essex Class ships - Hellcat, Corsair, Helldiver, Judy and B25c aircraft (Single Battles only) - Kamikaze attacks (Single Battles only) - 11 new Single Battles - Major re-balance…

    Killerfish Games

February

  1. Aircraft AI & AAA Customisation

    This update brings a lot of new customisation features to War on the Sea. In particular, aircraft AI attack parameters are now exposed along with fully editable ship AAA. Several other issues introduced in the previous update have also been…

    Killerfish Games
  2. Fog of War & AI

    This latest version (1.08g5h2) introduces fog of war to the campaign where enemy ship groups are no no longer fully identified on the campaign map. Incomplete and or incorrect data is supplied based on the visibility conditions under which…

    Killerfish Games

January

  1. Big Guns

    Hope you all had a safe and happy holiday season! This update introduces the three Japanese battleship classes: - Fuso - Ise - Nagato In addition, rear gunners have been added to those aircraft that were missing them along with support for…

    Killerfish Games

December

  1. Version 1.08g3h3 now LIVE

    Version 1.08g3h3 2 Dec 2021 Campaign map markers now save/load correctly (bug introduced 1.08g3) Player and AI aircraft no longer get locked firing guns and drain ammunition Corrected audio reference for…

    Patch notes

October

  1. Version 1.08g2 is now Live

    4 New Carriers and UI improvements For full details on this update, see below: https://steamcommunity.com/games/1280780/announcements/detail/3055122329837326939

    Patch notes
  2. 4 New Carriers & UI Improvements

    Update 1.08g2 is now LIVE. This update contains several major UI improvements, 4 new carrier classes along with other general fixes and improvements. Full change log below: Version 1.08g 21 Oct 2021 Roster Sorting Left click and drag unit…

    Killerfish Games
  3. Searchlights now available

    This update introduces searchlights into the game. Full change log below: Version 1.08f9h1 5 Oct 2021 Placing multiple way points on mini map fixed (bug introduced 1.08f9) "refundPostRepair:true" correctly refunds multiple merchant ship…

    Killerfish Games

September

  1. Searchlights in BETA

    This beta introduces searchlights. To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is…

    Patch notes
  2. Auto-Auto Scouting

    This update further automates scouting. Aircraft take off, fly patrol routes, land at dusk and automatically take off again the following dawn. In addition there is now the option to "Repeat" a course allowing ships or aircraft to…

    Killerfish Games
  3. Version 1.08f7h1 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  4. Version 1.08f6 Available

    This is a big one! Major features: - Many options added to edit campaign balance and alternate Command Point acquisition methods - Unit viewer now has an "aircraft" panel for ships with aircraft - Merchants and submarines made less…

    Killerfish Games

August

  1. Version 1.08e4 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  2. Version 1.08f3 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  3. Bomb Damage Update

    This update finalises the latest bomb damage model as well as adds a Weapons tab to the Unit Viewer for aircraft. Here you can view bomb armor penetration characteristics as well as aerial torpedo speed and range for the various aircraft.…

    Killerfish Games
  4. Version 1.08f2 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  5. Version 1.08f now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes

July

  1. Armor Piercing Bombs

    Armor piercing bombs are now supported, giving ships with heavy deck armor much better protection. This update also improves aircraft performance issues when running the game under low FPS. Change log below: Version 1.08e9 30 Jul 2021…

    Killerfish Games
  2. Version 1.08e9 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  3. New Features & Fixes

    Version 1.08e8h1 is now available and contains some great new features (and fixes) for War on the Sea; 1) Time Compression Availability Time compression can now be used during ship gunfire, dramatically increasing its availability. 2) Map…

    Killerfish Games
  4. Hotfix 1.08e8h1

    We finally solved the task force teleportation issue some users were reporting and have rolled out an immediate hotfix. Version 1.08e8h1 9 Jul 2021 (BETA) Fixed global player detected flag between campaign engagements which was not getting…

    Patch notes
  5. Version 1.08e8 now in BETA

    This beta fixes the syncing of radar and sonar buttons with the Orders Panel toggles as well as additional ship model improvements. To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you…

    Patch notes
  6. Version 1.08e7 now in BETA

    This beta introduces some new map tools (ruler and markers) along with increasing the availability of Time Compression to be allowed during ship gunfire. To opt into the beta: 1) Right click War on the Sea in your Steam library, go to…

    Patch notes
  7. Update - Ship Fixes

    Version 1.08e6 is now live. This update contains numerous fixes to ship appearances along with correcting weapons on board. Change log below: Version 1.08e6 4 Jul 2021 Ship Model Fixes brooklyn, cleveland, baltimore and wichita - corrected…

    Killerfish Games

June

  1. Version 1.08e6 now in BETA

    To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the pulldown to select…

    Patch notes
  2. War on the Sea 20% Discount!

    All hands man your battle stations! As featured in today's Steam Daily Deals, War on the Sea is now available at 20% off for a limited time. Don your Admiral's hat and take command of ships, submarines and aircraft in the Pacific War…

    Killerfish Games
  3. Manual & Tutorials Update

    This update brings the PDF game manual and in -game tutorials up to speed with all the changes that have occurred since version 1.00 of War on the Sea. For a complete list of all changes made to War on the Sea since version 1.00 see here…

    Killerfish Games
  4. Version 1.08e5 now in BETA

    Version 1.08e5 18 Jun 2021 (BETA) Updated Tutorials to be compatible with and explain new features from version 1.0 to 1.08e5 Updated PDF manual to be compatible with and explain new features from version 1.0 to 1.08e5…

    Patch notes
  5. Version 1.08e4h1 now LIVE

    Version 1.08e4h1 12 Jun 2021 This update adds; - Dogfight At Will toggle to the Orders panel enabling your fighters to engage enemy aircraft automatically as they are detected. - Additional fixes and improvements to gunnery Fire At Will…

    Killerfish Games
  6. Version 1.08e4 now in BETA

    8 Jun 2021 (BETA) To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have new tabs listing other available versions. 2) Password to access the beta is: warontheseabeta Use the…

    Patch notes
  7. Fire At Will

    When on, Fire at Will mode allows all of your ships to have autonomous control over their gunnery. They will fire main and secondary guns at targets, automatically switch to better or other targets as needed, select appropriate ammunition…

    Killerfish Games

May

  1. Version 1.08e3 now in BETA

    Version 1.08e3 30 May 2021 (BETA) Additional gunnery improvements and fixes to issues introduced in v1.08e2 Fire at Will mode now correctly allows firing AAA at aircraft Improved synchronisation between Wire at Fill mode and Auto Flak Flak…

    Patch notes
  2. Version 1.08e2 now in BETA

    This update introduces Fire At Will mode where your ships can automatically manage target selection and gunnery settings during combat. To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and…

    Patch notes
  3. Torpedo Improvements 2

    Version 1.08e is now available and includes further improvements to torpedoes. Player ships can now spot incoming torpedoes with the detection chance based on weather, time of day and if the torpedo has a wake or not. 3 new models of…

    Killerfish Games
  4. Version 1.08e in BETA

    Version 1.08e 25 May 2021 (BETA) GENERAL Less smoke usage by AI; - Retreating AI ships only lay smoke if detected so as not to give away their position - Retreating AI ship that is not laying smoke will begin to do so upon taking additional…

    Patch notes
  5. Smoke Screens

    This latest update introduces two major features; 1) Smoke screens Player and AI ships may now lay smoke screens. 2) Campaign endings/flow modifications Sinking many enemy ships now opens sea lanes, enabling an increased rate of resource…

    Killerfish Games
  6. Version 1.08d10 now in BETA

    This update builds upon beta version 1.08d9 and introduces 2 major changes. 1) Smoke screens Player and AI ships may now lay smoke screens. 2) Multiple campaign endings/flow modifications Sinking many enemy ships now opens sea lanes…

    Patch notes
  7. Version 1.08d9 now in BETA

    Version 1.08d9 10 May 2021 (BETA) GENERAL Sorted combat toolbar to be in front of Message Log CAMPAIGN New campaign win condition added if many enemy ships sunk Both campaigns modified: - Campaign setup.txt files added new variable to both…

    Patch notes
  8. Version 1.08d8 now LIVE

    Version 1.08d8 6 May 2021 GENERAL All ship_model.txt files corrected propeller rotation directions tone.model.txt corrected torpedo arc data ship_data.txt modifications; gridley, bagley, sims, cleveland, pensacola, wichita - corrected…

    Killerfish Games
  9. Version 1.08d8 now in BETA

    Version 1.08d8 3 May 2021 (BETA) GENERAL All ship_model.txt files corrected propeller rotation directions tone.model.txt corrected torpedo arc data ship_data.txt modifications; gridley, bagley, sims, cleveland, pensacola, wichita…

    Patch notes

April

  1. Campaign Rebalancing

    Version 1.08d7 is now available. This update takes the first steps towards better balance for the dynamic campaigns, in particular improving the ground war and making the building of airfields and ports easier and quicker to achieve. Over…

    Killerfish Games
  2. Version 1.08d7 now in BETA

    This update contains numerous fixes to ship technical data as well as the first steps towards re-balancing the campaigns. To opt into the beta: 1) Right click War on the Sea in your Steam library, go to properties/betas and you should have…

    Patch notes

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