The Crusades
In this scenario, play as one of four religious factions; the Catholic kingdoms of Western Europe, the Orthodox kingdoms of Eastern Europe, the Islamic caliphates of the Middle-East & Africa, & the Asatru kingdoms of Scandinavia. Will your religion become the dominant belief of the known world? Or will it go down in flames, to be remembered as ancient myths?
In this scenario, there would be four factions; the Catholic kingdoms of the Crusader States, Venice, England, France, Holy Roman Empire, Castille, & Aragon, the Orthodox kingdoms of Byzantium, Cyprus, Sicily, & Hungary, the Islamic caliphates of the Ottoman Empire, the Almohads, & the Ayyubid Sultanate, & the Asatru (Norse mythology) kingdoms of Denmark, Norway, & Sweden. I decided to include the Scandinavian kingdoms mainly because from what I recall, the Christianization of Scandinavia happened at around the same time as the Crusades. The main goal of this scenario is to spread your religion & conquer those who oppose it. Another goal will be to occupy the holy city of Jerusalem until the end of the scenario.
American Revolution
It is the late 1700s; the sound of revolution is ringing through the air. Play as one of six civilizations; America, England, France, Spain, the Netherlands, or the Iroquois tribes. Will the thirteen colonies of America finally become free? Or will they remain under the empire of which the sun never sets?
In this scenario, there are two factions (which have no names

) ; the revolutionary force of America as well as France, Spain, & the Netherlands, against the Crown of England & the indigenous Iroquois tribes. The goal of the scenario is for either America to achieve freedom from England by remaining free until 1776, when the scenario ends, or for the British to conquer America before 1776.
Manifest Destiny
Today is a glorious day for America! After defeating the British in the American Revolution, a new age has ushered in for America. Songs of praise for a Manifest Destiny ring, for the leader of France, Napoleon, has sold Louisiana & opened the gateway to the west! However, the west is still not easy to conquer; native tribes, religious pilgrims, European powers, & other post colonial nations will block the way. Play as either America or many other nations, ranging from England to Deseret to the Shoshone!
In this scenario, you may play as either America, the European powers of England, France, & Russia, the indigenous tribes of the Shoshone, the Iroquois, & the Cherokee, the Mormon State of Deseret, or the post colonial nations of Mexico & Texas. The goal of the scenario will be either for America to expand to the Pacific Ocean, for Europe to conquer America, or for the other nations (Shoshone, Iroquois, Cherokee, Deseret, Mexico, & Texas) to keep America out of their countries. I was thinking about having it be like the scenario added with Genghis Khan so you could only be America, but I wasn't sure about it.
The Opium Wars
War has broken out in China over the trade of opium from western nations. Choose your side; play as either the Qing dynasty of China or the colonial empires of England & France.
In this scenario, you would play as either the Qing dynasty or England & France. There would be a custom resource, Opium, & the goal of the scenario would be to establish economic control in the map.
World War I
The year is 1914. A war has broken out between the world; on one side, there are the Allied powers of America, Great Britain, France, & Russia (among others); on the other side are the Axis powers of Germany, Austria-Hungary, the Ottoman Empire, & Bulgaria. You must choose a side. Will you lead the Allies to victory & establish freedom for all? Or will you allow the Axis to succeed, spreading your ideology throughout the globe, killing anyone who opposes it?
In this scenario, you can play as two factions; the Allied powers of America, Great Britain, France, & Russia, or the Axis powers of Germany, Austria-Hungary, the Ottoman Empire, & Bulgaria. There will also be other non-playable civs that fit the theme of the era; these include China, Japan, Mexico, Brazil, & Argentina. The goal of this scenario is to spread your ideology throughout the map; either Freedom if you're the Allied powers or Autocracy if you're the Axis powers.