Here are 15 original ES maps with a twist..
I called it Random Map Kit for want of a title.
All maps except Pampas and Unknown
When you choose to play one it will either be 2x, 3x, 4x or 5x the size of the original. If you only want a specific size map then open up said map with a text editor, scroll down and look for these two lines of text -
//Random map sizer - 2x to 5x
int Map = rmRandInt(3,6);
The numbers in brackets (3,6) refer to the map size range, in this case from twice the size (number 3) up to five times the size (number 6)
If you want a map only 4x the size every time you play it, then change (3,6) to (5,5)
a 3x the size would be (3,6) to (4,4) etc.
If you wish to play random large maps say 5x to 8x times then change (3,6) to (6,9)
After editing choose save and not save as..
To play these maps, place all files in this zip (not this readme) into the folder: My Documents\My Games\Age of Empires 3\RM. Do not place them in the game's install folder - that will not work. When you start up a skirmish game in Single-player or Multiplayer, use the small blue 'Custom Map' button, which allows you to then select one the random maps in the 'My Games' folder from the drop-down window. They all begin with Rnd 'Rnd Carolina' for example..