Set the Mod to Hellenistic era, and set the script for the particularly long one. Set both you and the AI to Rome. (Dont know how to play as the other guys yet)

Sorry I should have made the instructions more explicit in the mod description. In the quick battle setup menu, under the game modifications drop down list select "The Hellenistic Era", from the game script dropdown list select "The Hellenistic Era" and then set the start and end age to the Gunpowder Age (Hellenistic Age). Lastly, make sure you either select the Turks (Romans in the mod) and Romans (Macedonians in the mod) as the player nations as these are the only ones that have been completed. Also note the following points:

- The following maps do not work with the Big Huge or Huge map sizes and will cause the game to crash: Atlantic Sea Power, East Meets West, Nile Delta
- In order for the AI build orders to work, make sure that you list the human players before the AI players when setting up a quick battle, and make sure that you are using red as your player colour.
- This mod will crash if it's priority is set below certain mods, notably the Terrain 5 Extended mod. To fix this, go to Tools and Extras => Steam Workshop, select the Terrain 5 Extended mod from the list and move it to the bottom by pressing "priority down". Then, just to be safe, move The Hellenistic Era to the top of the list by pressing "priority up".

where is the button download ???? :D :D im getting crazy rly..but wtf !! there is no way to download ?? i did subscribe i dont understand