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.

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 Europa Universalis IV Collection includes the base game and all DLC up until May 2017.

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.

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.

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.

Crusader Kings II: Horse Lords is the ninth expansion for Crusader Kings II, bringing players expanded gameplay based around the dynamic and vibrant nomadic cultures of the Eurasian steppes. In Horse Lords, you will be able to take anything from a smaller nomadic tribe to a great horde and start building your empire from horseback. This expansion introduces a number of new systems and game mechanics, for example a completely new government form and the possibility of having tributary states. You can also expand and control trade on the ancient Silk Road in order to finance your conquests - but beware - others will also try to gain control of these lucrative routes, and enemy raiders may try to destroy your trade posts if you don’t guard them well.

Crusader Kings II: Rajas of India is the sixth expansion for the critically praised strategy/RPG Crusader Kings II and will focus on Eastern Persia and India. The expansion Rajas of India extends the map to the east, including the entire Indian subcontinent, and allows you to play as a Hindu, Buddhist or Jain ruler. Can you defend Dharma against foreign invaders and bring order to the subcontinent? Crusader Kings II explores one of the defining periods in world history in an experience crafted by the masters of Strategy where medieval times is brought to life in this epic game of knights, schemes, and thrones...

Provides an opportunity to play for the Muslim dynasty, also adds to them new kinds of intrigue and various features. Muslims can have one home to his wife and three secondary. Half of the main skills of the wife goes to the governor.

The second expansion adds variety to the game for the Byzantine Empire. Faction appeared, the possibilities dazzle or neutered prisoners to recreate the Roman Empire or to overcome the great schism. Now Byzantine emperors themselves may appoint a successor, giving the honorary title of "despot" prefer the heir.

Rights of Man adds greater depth and detail to a host of game systems. New decisions, greater customization and added personality are all coming to the best-selling game about exploration, trade and conquest.

Winds of Change makes wide-ranging changes to twenty nations stretching from the Andean highlands to the vast steppes of Mongolia. There are many new branching missions, government reforms, events, estate privileges and more!

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.

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.

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.

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.

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.