Although the ancient and long-standing Indian civilization has gradually disappeared in the dust of long years, its mysterious and unique charm has left a deep impression, among which tribal life as the primitive Indian race in Indian civilization is also the most desirable. Now, "Age of Empires 3: The Chief of War" (hereinafter referred to as "Chief"), as the first piece of information released by Age of Empires 3, has added the real Indian racial civilization to the game world in history. Three indigenous peoples who played an important role in American colonial history will stage an American version of Romance of the Three Kingdoms, which is the first time that the Imperial Age series has joined American indigenous civilization. The biggest highlight of the game is to truly restore the different characteristics of the three nationalities. The three new civilization races in the game, Iroquois Federation, Sioux and Aztec, are all indigenous civilizations, and the reason why they chose these three races is explained by the game creator Sandy Petersen. "This is because the Iroquois and Sioux played an important role in the history of resisting the invasion of European colonists. They all control a large area of American territory. Adding these powerful and distinctive ethnic civilizations to the game's campaign mode will make the game more playable. " As an expansion, the game will not only add three indigenous civilizations, new fighting units and technologies, but also add new contents to other old civilizations, providing players with brand-new single-player battles, several new random maps of America and new ways to win battles. Just like the theme of the expansion released by E3 Ensemble Studio-"Fight for America", both the campaign mode and the system setting will focus on this. In the expansion, players will have more black family members, and the war will continue to write the legend of the black family.

First, let's talk about the Iroquois. The Iroquois are a civilized race of Indians. They live in new york. Before Columbus discovered America, they occupied most of the territory of the United States today. The Iroquois are highly civilized. They are strong and aggressive. In this race, there are other Iroquois tribes, including Mohawk, Ou Ning Daga and Oneida. Finally, at 1570, Hiawatha, the spiritual leader of Iroquois tribe, unified five tribes. 1722, a Tuzi Calora who moved from the south joined to form a six-nation alliance. The formation of the alliance enabled Iroquois to reduce internal friction, enhance their expansion ability and achieve unprecedented development in production. In the game, the hero chief of the Iroquois is set as a strong musketeer. From this point, it is not difficult to see the enthusiasm of this race for gunpowder civilization, and they are good at learning the advantages of others to make up for their own shortcomings, which is well documented. As early as when Dutch businessmen brought a large number of rich commodities to North America, colorful fabrics, iron products and guns deeply attracted Iroquois. They exchanged animal skins, turkeys and corn with Dutch businessmen, which was the reason why they were able to get along well with foreign Europeans at first. With the gradual infiltration of European civilization, they began to study the novelty items brought by Europeans and learn their science and technology, thus enhancing the combat effectiveness of their own race. Therefore, the Iroquois are the most "Europeanized" of the three indigenous races set in the game. They are Europeanized and have a strong local mysterious culture. As a solid economic foundation of the Iroquois, agriculture is also highly valued by the Iroquois, and the Iroquois will produce a large number of various crops in the game.

In many films about American colonial wars or western regions, Indian races are portrayed as villains who are savage and belligerent and extremely hostile to gunpowder civilization. In fact, they are tolerant of these strangers who break into their homes, and show great curiosity about the language and scientific and technological civilization of these western invaders. The kindness, sincerity and friendliness of Indians are more obvious in 1990, the first film with Indian subtitles in American film history, Dancing with Wolves, directed by kevin costner. In this film, we advocate nature. The simple and brave Sioux are also an important part of the game. Perhaps it is the classic "Dancing with Wolves" that makes Sandy Peterson learn from the characteristics of the Sioux people in the film in some settings of the racial characteristics of the game. For example, Sioux people are good at equestrian, and the competition follows the characteristics of traditional Indian civilization. Whether it is primitive civilization technology, religious beliefs and living customs, it is completely in line with indigenous civilization. On this basis, the production team carefully designed combat units such as arms and technology trees. Unlike Europe's heavy armor and high lethality, Sioux people have only three infantry units, and other combat units are closely integrated with their equestrian skills. Historically, Sioux people advocated a mysterious animal shaped like a giant dog-"the God of Bison", and they hoped to have the amazing speed and strength of the God of Bison. So in some settings of the game, this is also integrated into it. The Sioux people's advantage lies in the mobility of cavalry, especially in the cyber war of Imperial Age 3, and they are a nation very suitable for fast attack. Besides, they have advantages that the other two races don't have. Even at the beginning of the game, the Sioux population can reach 200 units.

Although each race will have its own unique combat arms, and some of the arms in the original book will be used in the expansion, at least eight combat units will be added to each race among the chiefs. For example, a long-range reflex hand unit, Barbarian Javelin Gunner, has been added, and its range is far beyond that of Aztec Eagle Warrior in Age of Empires 3. Eagle Warriors can only throw javelins at a medium distance. Moreover, the javelin thrown by the poisonous javelin shooter is poisonous and will not kill the enemy immediately. After the enemy hits, it will only slowly reduce the health, thus affecting the enemy's shooting speed and accuracy. Poison javelin shooter is the nemesis of musket phalanx, especially after shooting the enemy, slowly waiting for the enemy's health to gradually decrease, and then launching melee arms to attack, which can greatly reduce casualties and win very smoothly. If players want to win without a single soldier, there is a practical way. In Age of Empires III, the use of savage poison shooters against Iroquois Tomahawk fighters can also "non-contact" the gunpowder phalanx. There are also Iroquois lancers influenced by European cavalry, which are cavalry equipped with rifles. The expansion has adjusted many combat units and technology trees so that players can fully use these scientific research projects, and some arms of the Iroquois can also be recruited as mercenaries at the trading post of Age of Empires III. In addition, Indians have no home city system at all, only tribal councils, and tribal councils can also use the card system.

Authenticity is everywhere in the game. For example, the fortifications of European invaders are watertight fortresses, and the Indian nation can only work hard on the attack. Therefore, the production team carefully designed scientific and technological research and development projects focusing on improving attack power for three Indian races. These scientific research and development projects are related to Indian religious beliefs and herbs, which can be used to improve the attack power, attack frequency and attack speed of soldiers of all ethnic groups. In the research and development of siege warfare, heavy firepower is the most critical, which is also shaped according to historical facts. As primitive Indians, their weapons are mostly primitive siege weapons, and even the old siege tools in Imperial Age II will appear in the expansion. Therefore, the "chief" emphasized how to improve the siege ability of the three races. Each race has its own powerful secret siege weapon. The Iroquois' secret weapon is the siege hammer, and they often attack enemy fortresses with siege tactics. The Indian race is fighting on its own land, so it also occupies the home court advantage. Indian races spend much less time on reserve and material supply than other European countries. However, the research and development of gunpowder technology of the three races in the game began with their purchase from European invaders, and only after purchasing the finished products can the next technological transformation be carried out.

The subtitle of the game "Leader" has clearly indicated the hero in the expansion. Chief, as the leader of a tribe, is also the commander of game fighting. Unlike European colonists who held gunpowder, Indian chiefs wore colorful feathers with heads on their heads. In the game, the Sioux leader is a knight with a spear. As chiefs' heroes, they can not only have strong attack power, but also enhance the halo effect of different abilities of soldiers around them. Consistent with their habit of advocating nature, chiefs also have special skills in manipulating animals. At the beginning of the game, chiefs can even explore the treasure alone without any army. The most interesting design in the game should be regarded as the fire pit of Indian aborigines. Players can watch indigenous dances by making a fire. Indigenous Indians will perfectly present wonderful and original song and dance programs and mysterious customs, so that the harmonious and beautiful atmosphere will be broken by intruders. Whether Indian civilization can defeat European colonists equipped with gunpowder weapons depends on the players. A bonfire can accommodate 25 units, and these ethnic groups will form a circle and start dancing. Dance of each race or different units will also have different effects, such as: villagers' dance can bring endless accumulation of resources, wizards' dance can accumulate divine power, provide resources for chiefs to launch special skills, and soldiers' dance can gradually increase the maximum health of other combat units.

The picture quality of the expansion is excellent. Like the original, the expansion uses self-projection technology, HDR (high dynamic range) light and shadow technology and Fresnel reflection technology. The reflection of the cavalry fighting in the water, the sparkling phosphorus river, the misty mountain forest and the smoke curling up from the kitchen show the detailed description. In the fierce battle scene, we can see that the bombed soldiers and buildings were destroyed by gunfire, which is in sharp contrast with people in busy farming seasons and busy trading places, and everything seems so real.