Hi, I'm a Japanese player of Empires DotMW.
If you find any character and grammar errors etc..., please forgive me!

There are very downloadable additional elements of Empires DotMW on what a wonderful site, Empires Heaven.
Some people already introduced that site on this forum but there are more great works.
Here is the front page↓
empires.heavengames.com/
(Add http:// on top)
Surprisingly the site was launched on 2003 and still is working.
I had looked for any other sites which is fan site of Empires DotMW but couldn't find except this site.
I must appreciate the nice site and great content creators.

After you go to the site, click "Downloads Central" on the left side menu.
There will be several Categories of Downloads.

Campaigns:
You can download 100 custom campaigns.
Installation is very easy.
Put the download file in ".../Empires Dawn of the Modern World/Data/Campaigns/"

Scenarios (for Single Player or Multiplayer):
Those are not campaigns but scenarios which play in single.
Both of DLs for Single Player and for Multiplayer are above 100.
Put the download file in ".../Empires Dawn of the Modern World/Data/Scenarios/"

Random Map Scripts:
Do you know you can create Random Map Scripts in order to play your favorate map style?
There are several scripts on the site.
For example, Wyldernesse which has huge forests and Land of Gloly which is like Large Island and Peloponnese.
However...some scripts are hard to play because of too little gold mines.
Put the download file in ".../Empires Dawn of the Modern World/Data/Random Map Scripts/"

Recorded Games:
If you want to watch the other players playing, you may better to Download this.
Over 200 Recorded Games are being distributed.
Put the download file in ".../Empires Dawn of the Modern World/Data/Save Games/"

Other, Sounds, Textures and other contents are available.
If you want to edit scenarios or campaigns, I recommand you to download "Modding Tutorial" at "Design Hints, Tips and Tutorials"
It is very kindful official manual of editing scenarios and campaigns.

Thanks to read to the last.
I hope this topic help you.