Eras

There are 13 eras in this game. To progress to the next era, one must research all technologies in that era, and meet the requirements of Population and Territory.

When playing the right way, the population will be the main problem until Agricultural Era, and the technology goal will be the biggest after that. And from Iron Era, it will be the only one.

Savage Era
"'Due to the failure of the spaceship, you are forced to land on this familiar and unfamiliar planet while traveling across the stars. There is no way to repair the spaceship for the time being. Anyway, survive first!'"Number of technologies: 2

Requirements: None

Dawn Era
"'Because lighters and matches are prohibited on the spacecraft, you have to drill wood to make a fire if you want to eat hot food. The smell of barbecue makes the local aborigines worship you as gods.'"Number of technologies: 10

Requirements:
 * Research all technologies of Savage Era
 * 20 Population
 * A territory of 2000(initial amount)

Stone Era
"'With the accumulation of advanced information, you can revise the calendar, unify the language, popularise mathematics, improve architecture, and train hitters, which is a thriving scene.'"Number of technologies: 17

Requirements:
 * Research all technologies of Dawn Era
 * 500 Population
 * A territory of 7500

Agricultural Era
"'Compared with the spread of stone tools, your wisest decision is to build a bath pool. Good hygiene conditions make everyone happy physically and mentally and work harder.'"Number of technologies: 18

Requirements:
 * Research all technologies of Stone Era
 * 3300 Population
 * A territory of 85k

Bronze Era
"'Under your rule: everyone is happy.'"Number of Technologies: 19

Requirements:
 * Research all technologies of Agricultural Era
 * 17.2k Population
 * A territory of 880k

Classical Era
"'The goal of embarking on the peak of life seems to have been realized here, and you suddenly have the thought of having fun here, not wanting to return.'"Number of Technologies: 21

Requirements:
 * Research all technologies of Bronze Era
 * 132k Population
 * A territory of 5600k

Iron Era
"'Song and drama have been developed, at the same time, under your careful training, the fighters under your command are more well equiped.'"Number of technologies: 22

Requirements:
 * Research all technologies of Classical Era
 * 460k Population
 * A territory of 28M

Hero Era
"'The emergence of ironware was quickly applied in various fields, and civilization made great progress. There is no doubt that this is an era of great civilization explosion!'"Number of technologies: 24

Requirements:
 * Research all technologies of Iron Era
 * 1400k Population
 * A territory of 95M

Castle Era
"'In the process of development, a group of people emerged slowly. They are elites in their respective fields, willing to endure hardships, able to fight hard and respected.'"Number of Technologies: 27

Requirements:
 * Research all technologies of Hero Era
 * 3660k Population
 * A territory of 300M

Nautical Era
"'The prosperity of civilization has promoted the development of the maritime industry. People who go out to the sea often say a word: 'Look at the Haiping line, wait for me to come back!' '"Number of Technologies: 29

Requirements:
 * Research all technologies of Castle Era
 * 6730k Population
 * A territory of 640M

Additional Eras
The game intended to have more Eras.
 * Firearms Era: Mentioned in Facebook
 * Steam Era: in APK File
 * Electric Era: in APK, mentioned in Nicola Tesla description.