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?

Experience one of the most defining periods in world history in an experience crafted by the masters of Grand Strategy. The greatest cultural and military civilizations are brought to life through this epic title rife with great strategic and tactical depth. Set during the golden age of the Roman Republic when the Senate ruled the Empire, Vae Victis features a massive number of additions and improvements to Europa Universalis: Rome, a game that was already one of the most prominent to depict that era in the widest scope. An overview of these key changes begins with government, which has received a lot of attention for the expansion in order to produce more fluid and balanced gameplay. The cast of historical characters of the ancient world have also had a significant overhaul across a variety of areas and with the addition of missions, decisions and laws.

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.

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.

At the demand of the devout fanbase, this is the 4th expansion of the classic historical strategy game Europa Universalis III. Enhancing every aspect of the game to create an even deeper and more rewarding experience.

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

The strategy wargame March of the Eagles is dedicated to the era 1805-1820 focused on the dramatic conflicts of Europe. March of the Eagles explores one of the defining periods in European history in an experience crafted by Paradox Development Studio, the masters of Grand Strategy and makers of Hearts of Iron and Europa Universalis. The Napoleonic War is brought to life in this war-focused strategy game.

Europa Universalis III Complete includes the original Europa Universalis III as well as the expansions In Nomine and Napoleons Ambition 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.

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.

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.

While Europe slowly pulls itself from a period of darkness, the East continues to shine brightly. The Ming throne is set on a foundation of thousands of years of civilization while Japanese warlords do battle in honorable array, holding tight to their bushido code. The gods have blessed Asia with wealth and culture.

Uncover the ruins of long-dead civilizations in Relic Worlds to piece together the story of their rise and eventual downfall. Mine their derelict cities and ships to unearth the truth, discover powerful relics and harness them for your own empire’s ambitions.

Red Flood is a mod for Hearts of Iron IV set in an alternate timeline where the Great War ended in stalemate. The year is now 1936 and Europe once more is on the brink of war.

Addition or additional script adds a fictional invasion of bloodthirsty Aztecs in Europe. This is the first Paradox Development Studios, where they have departed from the true story.

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.

Crusader Kings II: Sons of Abraham is the fifth expansion for the critically praised strategy/RPG. Gameplay focuses on the Abrahamic religions; Christianity, Islam and Judaism. The expansion for the critically praised strategy/RPG Crusader Kings II explores one of the defining periods in world history in an experience crafted by Paradox Development Studio, the masters of Grand Strategy. Medieval Europe is brought to life in this epic game of knights, schemes, and thrones.

This mod is an overhaul of Hearts of Iron IV and takes place in alternate timeline where Russia, after the Brusilov's offensive manages to break through the Austrian defenses taking out Austria Hungarian Empire from the war. Germany, fearing complete destruction of their Empire sued for peace later in the beginning of 1917.

The supreme art of war is to subdue the enemy without fighting. With the Stellaris: Federations expansion, players can extend their diplomatic dominion over the galaxy like never before. Use every trick in the book to gain an edge on friend and foe alike, with a host of new options to influence, manipulate, and dominate without firing a shot.

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 Kaiserreich 4 Team are proud to present the most popular alternate history mod for Hearts of Iron II, Darkest Hour, and Hearts of Iron IV! Originally conceived by Sarmatia in 2005, Kaiserreich has since developed into one of the most in-depth alternate history mods, with thousands of unique events, graphics, countries and even mechanics! Rewrite history (again), but this time in Hearts of Iron IV!

BioGenesis is an expansion for Stellaris, released as a part of the Season 09 Expansion Pass in 2025. Step into the role of a master geneticist, sculpting the galaxy to your design with living ships, engineered ecosystems, and enhanced species. Forge new paths with unparalleled bioengineering tools to create a civilization that thrives on adaptability and evolution – or exploit these tools to dominate the stars.

Europe is in turmoil. The land has been fragmented into petty fiefdoms. The Emperor is struggling with the Pope. The Holy Father declares that all who go to liberate the Holy Land will be freed of their sins. Now Is the Time For Greatness…