Eras

Currently, there are 3 Ages in the game which can be seen/unlocked by campaigns, the Primitive Age, the Classical Age and the Middle Age. You unlock new 'Eras' (Called scenarios in the new game tab) by going through the campaign. All of the ages are playable except the primitive age as you have to go to the tutorial campaigns to play it. There are also some new ages after 1500 AD but they aren't completly finished and are not completly playable. As of April 2021, you are unable to join servers after 1500 AD, as there is no campaign to unlock further dates.