黑话

钢铁雄心4及其相关的社区有自己的黑话，包括俚语和缩写。

俚语

以下是游戏和围绕游戏的讨论中一些常见的俚语：

• Blob: A large nation that tends to get larger over time unless checked. Named after how such large nations' expansions can leave them with irregular borders, resembling blobs of paint.
• (Country) Can Into Space: 让一个国家逆天，获得超出预期的成功 (来自 polandball 圈子的梗。)
• 黏土: 某人的核心领土. 同样来自隔壁波兰球圈.
• Div(s): 师(s), 地图上的基本作战单位.
• Doomstack: An extremely large enemy force; seldom used in HoI4.
• Justifying: The political action of building a propaganda case against a country to justify a declaration of war.
• Mana: Slang for numerical Political power, Experience and other points.
• Mech: Mechanized regiment or division
• Mod: A software package that modifies the game, written by the player community. Compare with DLC.
• Nuke: Nuclear bombs, or the act of using them.
• Org: Organization, required for any division to continue or engage combat.
• Reinfs: Reinforcements in manpower, equipment or both.
• Savescumming: Reloading earlier saves when something goes wrong in order to set things right. Often considered a negative trait; impossible to do if Ironman is activated.
• Strat: Strategic bomber or strategic redeploy or strategy.
• Wardec: The act of declaring war / being declared war upon.

国家缩写

有时用于国家的缩写。虽然不是首字母缩写，但经常用大写字母书写，许多源于Paradox使用的国家标签。

• AST: 澳大利亚
• AUS: 奥地利
• AUST: 澳大利亚
• BEL: 比利时
• CAN: 加拿大
• ENG: 联合王国
• FIN: 芬兰
• FRA: 法国
• GER: 德国
• HOL: 荷兰
• HUN: 匈牙利
• INS: 印度尼西亚（荷属东印度群岛）
• ITA: 意大利
• JAP: 小日本
• NED: 荷兰
• POL: 波兰
• ROM: 罗马尼亚
• SAF: 南非
• SPA: 西班牙
• SOV: 苏联，有时也指共产国际阵营。
• SU: 苏联
• YUG: 南斯拉夫

AAR

行动后报告（AARs）是发布到 HOI4 论坛或个人网站由玩家撰写的关于他们正在进行的游戏的博客的主题。 它们可以从玩家的个人角度来编写，也可以从虚构的叙事角度来编写，就像小说一样。 一些作者还融合了这两种元素，从元游戏讨论到以他们游戏的替代历史世界为背景的虚构叙事。

玩家的观点

"I had a rough time as Austria this last session. It started when Ulm, that darned OPM, suddenly brought in half the HRE against me when I declared war on it. In all my playthroughs, this was the first time I ever was faced with such a nasty coalition. Before I knew it, not only was I facing the coalition, but the Ottoman Empire decided to make a DOW on me while I was in the thick of it!“

虚构的故事

"Let me tell you a story, a story about how a small and obscure nation, would come and rise to glory and ultimately shape history forever...

It is 1938 and the Munich Conference is in to discuss theSudeten crisis. France and the United Kingdom came to decide the fate of little Czechoslovakia's northern front, the Sudetenland. Both of these powerful nations, France and the U.K. decided to fall in to the German Reich's demands for the land, effectively giving it to them. But when the German soldiers went to their "newly aquired lands" they saw forts, bunkers and all sorts of fortifications along the border, with Czechoslovakian flags held high. See, the Czechs had a fear of this crisis since 1936, and they acted on it. They build great land forts, built the army, worked on moving to a full war economy and mass produced weapons. The Czechs were ready to defend their rightful home. 2 months will pass and the German Reich will demand that Czechoslovakia surrender the land or there will be war... The Czech president sent a message to the German aggressors, "Come and take it", at that moment, In 1938, the German Reich decalred war on the Czechs. No help from the U.K. or France made the situation look dire, but the brave Czechs had a plan, they reformed the "Little Enente" of Yugoslovia and Romania. Hungary, bordering the east of Czechslovakia would go onto join the Axis, and try to invade Slovakia, but Romanian troops will crush the Hungarian menace, and absorb their lands. Its now 1939 and Italy has not decided to enter the war, and Romanian and Yugoslavian troops occupied by fighting to defend Yugoslavia from German invasions, was unable to help the Czechs against Germany, Czechoslovakia stood alone. They saw the German army, the Panzers, the Luffwaffe, and decided that they must hold the line. Winter, 1939 German troops are suffering heavy from attrition, the Czechs have been prepared for winter and have plenty of equipment to hold, then, on December 17, 1939, the Field Marshall of the Czecholslovakian Army ordered a push to attack the encamped Germany attackers. The Czechs raided out of their bunkers and attacked the unprepared Germany army. The Germans were rapidly pushed back, Almost no rest for the retreating German army made them weak. January 12, 1940 -- The capital of the former nation Austria, Vienna, has been taken by Czech forces, the same will be with Nuremberg, Munich. March 11, All of former Austria has been taken by Czech forces, and the entire southern half of Germany has been taken. March 13, The Soviet Union will inavde Poland, and begin to justify war against the Czechoslovakian goverment. In March 27, 1940, the capital of the German Reich, Berlin, will fall to Czech forces, Germany is contemplating surrender. A day later, March 28th, Italy will decide it cannont stand idely by while their ally is being demolished, they declare war on Czechoslovakia. Italy will launch a full invasion on Yugoslavia, in April, Yugoslavia will capitulate to the Italians. Every bit of Germany has been taken except the city of Hamburg, the last bastion of the Nazi goverement. In September of 1940, the German Reich will capitulate to Czech troops. Italy stands alone against the Czech might, A massive army pushed down the Italian pennisula and in December of 1940, Rome will fall. In Early 1941, Italy will surrender to Czech forces, and will be left with control only over Sicily and Sardina, effectively kicked off mainland Europe. In March of 1941, Japan will enter the war and attempt to restore the GErman Reich, their invasion will be stopped. In May, 1941, Japan will give up on the war and ask for peace. The Allies are fighting against Comintern forces while the Czechs consolidate their newly aquired land of Germany, Austria and Italy... and remember the day that when their freedom was in danger, they fought, fought valiantly for it, and won.

The course of human history was changed that day, WW2 never occured, America and the Allies will fight and destory the Soviet Union in late 1944, the Cold War will never happen, and Czechoslovakia will become one of the most powerful nations in the world. Czechmate."

Players can include screen shots from their games, maps, period art, and other elements to add depth to their reports.