Popular games built on game engine Clausewitz Engine

Rule your land and dominate the world with unparalleled freedom, depth and historical accuracy. Write a new history of the world and build an empire for the ages.

The Dark Ages might be drawing to a close, but Europe is still in turmoil. Petty lords vie against beleaguered kings who struggle to assert control over their fragmented realms. The Pope calls for a Crusade to protect the Christians in the Holy Land even as he refuses to relinquish control over the investiture of bishops - and their riches. Now is the time for greatness. Expand your demesne and secure the future of your dynasty. Fill your coffers, appoint vassals, root out traitors and heretics, introduce laws and interact with hundreds of nobles, each with their own agenda. A good lord will always need friends to support him. But beware, as loyal vassals can quickly turn to bitter rivals, and some might not be as reliable as they seem... Stand ready, and increase your prestige until the world whispers your name in awe. Do you have what it takes to become a Crusader King? Crusader Kings II explores one of the defining periods in world history in an experience crafted by the masters of Grand Strategy. Medieval Europe is brought to life in this epic game of knights, schemes, and thrones...

Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history. From the heart of the battlefield to the command center, you will guide your nation to glory and wage war, negotiate or invade. You hold the power to tip the very balance of WWII. It is time to show your ability as the greatest military leader in the world. Will you relive or change history? Will you change the fate of the world?

Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.

Europa Universalis III delves deeply into the areas of exploration, trade, warfare and diplomacy. This epic strategy game lets players take control of a nation and guide it through the ages to become a great global empire. Unparalleled in its depth and historical accuracy, Europa Universalis III gives the player unprecedented freedom in how they choose to rule their nation from an impressive choice of over 250 historically accurate countries.

Use your power as a Feudal Lord to unite the land of the Rising Sun under your iron fist.

Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.

Welcome to Pax Britannica: An Imperial Timeline, an alternate history science fiction mod for Hearts of Iron 4.

El Dorado is the fifth expansion to Europa Universalis IV and brings to life the conquests, creeds and discoveries synonymous with the Age of Exploration. The centerpiece of the latest addition is the Nation Designer, which allows the customization of a starting nation in a campaign and further enhances EU4’s already near infinite replayability. This expansion’s focus on Central America and South America introduces new religions whilst impactful theaters of exploration will challenge you with new decisions worthy of a king or conqueror. As the Aztecs, subject the Mexican plain to your rule but be sure to have enough vassal kings to sacrifice to your angry gods. As the Europeans, push deeper into the jungles of the Amazon, following rumors of lost cities and magical fountains. Whatever path you choose, El Dorado is sure to be a golden addition to your Europa Universalis IV playing experience.
The Europa Universalis IV Collection includes the base game and all DLC up until May 2017.

Conquest of Paradise focuses on the New World. It adds an expansion to the mechanics of tribal nations, most prominently Native American ones. It also adds a random new world generator which randomizes the landscape of North and South America. The accompanying patch also added colonial regions, protectorates and new starting nations as well as many other small additions and fixes.

Includes a new core system and technologies. New planes to explore. New branching narratives.

Paradox Development Studios ups the stakes with the latest and third expansion from Europa Universalis IV – The Art of War. Centered on the 30 Years War and bubbling political instability between church and state, this expansion features improved gameplay mechanics that’s puts warfare at the forefront of your quest for domination and triumph. Improved naval combat and full army control means the course of victory rests solely on your shoulders. Will you choose to triumph alone or rely on the combat strengths of your allies? Your decision will decide if your empire lasts through the ages.

In Europa Universalis IV:Mare Nostrum, you now have even more tools at your disposal as you guide your nation through the early modern world. As its name suggests, Mare Nostrum introduces new systems connected to naval warfare and control of trade.

Discover new ways to expand your empire in this expansion to Paradox Development Studio’s flagship game about the early modern era. Europa Universalis IV: Emperor brings new depth and new options to your efforts to dominate the globe in the early modern world. Revolutions spread like wildfire, demanding action from kingdoms that don’t want to be swept up in the feverish calls for reform. Old mechanics are reinterpreted and new options are available on a freshly redrawn map of the continent.

In Monks and Mystics, your characters can follow new paths in their search for religious enlightenment and holy blessing, joining sacred societies or secret brotherhoods that open new opportunities for role-playing and story-telling in one of the most popular historical strategy games ever made.

The Republic is the third expansion for the critically praised strategy / RPG Crusader Kings II. In The Republic you play as a Patrician in one of the great medieval Merchant Republics. Expand your trade empire as you compete with the other four Patrician families for the coveted position of Doge and the leadership of the Republic.

Common Sense focuses on diplomacy, religion and internal development. New religious gameplay is added, focusing on Protestants and Buddhists. Parliaments are added, and a special parliamentary government is granted to England. The coinciding patch included new religions, improvements to the peace system and a reworking of the fort system. The number of building slots were also decreased, but the existing ones made more powerful.

It is 2020. The world holds it’s breath as a newly discovered coronavirus disease spirals out of control, and spreads like wildfire worldwide. Economies plunge into another recession, societies further radicalize, and worst of all, political instability is on the rise. Surely nothing worse could happen, right? With the collapse of Saudi Arabia into civil war, the Coronavirus Pandemic, and the nationwide riots against police brutality, at a scale worse than the 1992 LA riots, the United States of America is facing it’s darkest hour. It’s collapse is inevitable, and the world balance is at stake. With the death of the American Hegemony, her modern rivals eye their historic territories with an unfound vigor.

KaiserreduX started out in late 2019 as a collection of various submods for Kaiserreich, later evolving into a unified submod turned fork and eventually - thanks to the continuous addition of new content, wider sweeping changes to lore and setting, and ever widening differences in design philosophies between the original base of the KR mod and KX - into a wholly separate entity that is in no way affiliated with KR beyond sharing the conceptual ideas for the timeline, albeit with many differences, and the base for the mod, so do not run the two mods together; KX is a standalone product. While KX has kept a considerable amount of pre-existing KR lore, much of which has changed by now, it has also introduced a lot of new elements and additions going beyond the scope of the timeline created back in the days of Kaiserreich for Darkest Hour.

Godspeed: A Flame for Winter is a Hearts of Iron IV total overhaul mod focused around a wildly divergent alternate history and an emphasis on storytelling. In Godspeed, you fight not over revanchism, ideologies, or which version of Germany won which version of World War I, but over you and your faction's grand plan for the world after the war is over.

Old World Blues is a total overhaul for Hearts of Iron IV: starting in the year 2275 and set in the Fallout universe. Experience the post-apocalypse like never before with a dynamic war system that ensures that the AI nations act on their own, respond to aggression, and strike when their opponents are weak. Forty seven national focus trees—ten of which are generic—keep the game exciting as numerous powers contest in a battle to control the Wasteland. With the use of “Historic Focuses”, you get to decide the path famous Fallout factions took, directing generic nations, and changing history as you see fit.

Hearts of Iron IV: The Great War, an overhaul mod for Hearts of Iron IV, puts you in the position of one of the countries of the world in World War One's time period. In an era where the stakes were high and risks even higher, you'll have to tread lightly when it comes to diplomacy. A single mistake or a single bluff gone too far could mean the deaths of millions.

Little remains of those settlements where the Black Death has passed through. Hasty burials make a mockery of the sacraments and set a feast for the crows. Once prosperous provinces have been laid waste, and the lord of the land hides away – secluded in his hilltop fortress, hoping the plague will pass him by. Wiser princes took precautions, and didn’t waste the revenues from more prosperous years. But, in time, all must pay The Reaper’s Due. The Reaper’s Due adds a host of new mechanics centered on the Black Death and other world shaping epidemics. Lock your gates to keep the plague from infecting your court, even if it means cutting yourself off from your suffering citizens. Peace and good management will see your provinces reward you with greater wealth and manpower, but constant war and disease may depopulate your countryside.