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Leaving EA on the 31 st of August. Get them game now before I change its price to 14.99usd !
Join us on Discord -> https://discord.gg/tavRA6W
Hi I'm Valentin, young French developer of 21 years old. I started this game in December 2019 from scratch after playing my first wargame for a couple of hours.
Working alone on it with my brother who's responsible for the art.
This game features :
  • Over 700 units
  • Customizable units (Rockets, bombs, drop tank, torpedo, trucks, half tracks, horses etc)
  • A rank and experience system for the units, and the player
  • Any country you want to play
  • A unit editor (Create or modify any unit you want)
  • A tile editor (create or modify any tile you want)
  • A country editor (Create any country you want)
  • A map editor allowing you to recreate any battle of your choice (up to 300 x 300 hexes and above if your PC can handle it)
  • A fully functional steam workshop to upload your work to, and download other's
  • An entire Europe map
  • An entire Pacific map
  • An entire Eastern front map
  • A campaign for major countries, with a core-unit system (Keeping units between scenarios)
  • A supply line mechanics (Optional)
  • Blowing up or repairing bridges mechanics
  • Diving / going to surface, and spotting mechanics with submarines
  • Retreat, surrender, capture mechanics
  • A morale mechanics (Optional)
  • A season mechanics + weather mechanics (Optional)
  • No time limit to complete scenarios if you don't want to
  • Daily, or almost updates
  • A complete guide on Steam + official tutorials on youtube
  • A cool developper :))
Operation Citadel isn't just about the eastern front, and even less just about one battle. To be honest, all good names were taken and I could not think of one.
If you have a better idea, I would be happy to hear it, send me an email or drop by our discord !
The game should run just fine on pretty much anything. If not, you'll get a refund, but let me know so I actualize the requirements !
If you have any suggestion, critic to make, send an email or leave a message on the discord, or open a topic in the forum. You will ALWAYS be answered to.
And last but not least, if you like the game and want to support me, leave a positive / constructive review here on Steam, share the game with your friends, knock yourself out !
Operation Citadel
Valentin LievreDeveloper
Valentin LievrePublisher
2020-03-05Release
🎹🖱️ Keyboard + Mouse
Overwhelmingly Positive (704 reviews)
Public Linux Depots:
  • Operation Citadel Depot : Linux [1.65 G]
8.1.0

Hello all!\n\nThe beta for 8.1.0 has come to an end and is in good shape for a public release.\n\nSpecial thanks to all of the people that participated :) Love ya\'ll!\n\nAs discussed previously , version 8.1.0 replaces entirely the old multiplayer server. No data could be carried over, therefore, you will have to create a new account to access online features (both chat or multiplayer, PBEM/realtime).\n\nIf you have a PBEM game going on on the old server, you have until January 1st to complete it.\nYou can install 8.0.7 back from the beta branch system on Steam: (Right-click the game Properties Betas choose 8.0.7)\n\n

ADDED

\n
    \n
  • Brand new PBEM server. \n
  • Several new sections in the Manual.\n
  • 7.5 cm le.IG 18 and 7.5 cm Gebirgsgeschutz 36 light artillery to Germany.\n
\n\n

CHANGED

\n
    \n
  • All base game units end use year has been changed from 1946 to 1949.\n
  • Updated all of the realtime multiplayer libraries (we were quite a few versions behind).\n
  • Many sections of the manual have been cleaned up and reorganized.\n
  • Red color on damage breakdown is now brighter for increased readability on dark backgrounds.\n
  • End of turn menu will no longer appear when playing a singleplayer game (when going from one human player to another).\n
  • Foreign equipment is now available in the upgrade menu.\n
  • When upgrading/downgrading a unit to a modified version of itself, it will no longer be sent to the reserve.\n
  • Saving during multiplayer games is now allowed (all).\n
  • Rebalanced Low Countries campaign scenario (Axis side).\n
  • Finnish F2 Buffalo has been renamed into B-239.\n
  • Coastal batteries are now allowed to be deployed on any ocean/sea coastline that you control.\n
\n\n

FIXED

\n
    \n
  • Achievement \'Losing a hero\' could not be unlocked.\n
  • Naval units were affected by land units\' ZoC.\n
  • Game was loading Custom Heroes data from one folder and saving it into another, leading to data mismatch. Proper location is: GAME/MODS/YOUR_MOD/Custom Heroes/Custom heroes.txt\n
  • When opening the \'Statistics\' menu before the game\'s end, if you changed the sorting mode, that could re order the whole list of players.\n
  • Move or attack not properly greyed out on units that have the \'move or attack\' property.\n
  • Typo in the Farragut and Allan M Sumner destroyer classes (USA).\n
  • Buildings (units) were showing a non zero upkeep value, even though they had no upkeep value.\n
  • \'Better Scientists\' policy was not excluded from the menu when playing without the \'Research\' setting.\n
  • \'Flexible Strategy\' policy was not giving any refunds on policies you cancelled after loading a save.\n
  • Music player resuming automatically when tabbing out/back in even though you manually paused it.\n
  • Europe \'45 had a missing airfield VP in Poland and 2 wrong road tiles in Iraq.\n
  • AA units could attack enemy planes during bad weather if the tile had an enemy land unit in range.\n
  • In some specific cases, air units could become invisible when an enemy land/naval mine was on the same tile.\n
  • Upgrading a ship to a carrier was not allowing that ship to launch airplanes.\n
  • Fighter planes had their attack SFX overwritten in some cases.\n
  • Landing bonus on damage breakdown was showed as red instead of green for Marines.\n
  • Some units could remain invisible in some specific cases due to the recent \'cleared FOW saving\' feature.\n
  • Several upgrade/downgrade cost issues.\n
  • Minor localization issues.\n
  • Drawings were not refreshed for your allies in real time multiplayer.\n
  • Using supply ships/planes in real time multiplayer was not synced.\n
  • Germany in the scenario North Africa 1942 had negative manpower on turn 1.\n
  • Joining a faction through the diplomacy menu was opening the \'faction creation\' popup window.\n
  • Sometimes, in very specific cases, some unit in the Order of Battle could display a hero name even though they had none.\n
  • FOW on the map was not refreshed in real time multiplayer after a player accepted an alliance proposition.\n
  • Weather was not synced properly in real time multiplayer.\n
  • Upgrades, downgrades, or update actions were not synced properly in real time multiplayer.\n
  • Efficient Modernization policy was applied even when downgrading (money getting in) meaning you\'d lose some money (25%).\n
  • Code freeze due to units no longer existing in the game being used by events (they will now be skipped/removed).\n
  • Localization issue with policy picking confirmation window.\n
  • Main menu soundtrack sort of starting to play twice when launching the game.\n
  • When trying to draw/erase with the drawing tool in real time multiplayer, it would always modify the active player regardless if it was you or someone else.\n
\n\n

REMOVED

\n
    \n
  • Access to previous multiplayer server. (You can still use the old version until January 1st, 2026)\n
\n\n

FOR HARMONY MODDERS:

\nPlayer.Nickname (string) has been removed and replaced by Player.UserId (Guid).\nIf your mods use this variable, please update them accordingly.

[ 2025-11-17 12:07:54 CET ] [Original Post]

Minimum Setup

  • OS: Im not sure
  • Processor: i3 or higherMemory: 1500 MB RAM
  • Memory: 1500 MB RAM
  • Graphics: 512Mb
  • Storage: 1700 MB available space

Recommended Setup

  • OS: Im not sure
  • Processor: i3 or higher
  • Graphics: 512Mb
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