I have taken three terrain scenarios and modded them to my liking.

Snoopy's Terrain
Winter Terrain
European Terrain

I have modded all three enabling each to start in the Future Ages and allowing 24 civs. I don't know how many actually like this idea but I have had some AMAZING games with these and I suggest you try it, even if it doesn't stay in your folder for too long :)

Directions:

Just unzip to your PTW/Scenarios directory and enjoy :)

Sounds intereting, would you post a screenshot for us who dont have ptw(yet).

Here is an SS of my Winter Terrain 24 Civ game in the Future Age :)

24 Civs SS (http://www.civfanatics.net/uploads3/24_civs.JPG)

What, no Watercolor version? :)

Warpstorm, I did it yesterday :)

It looks great and I won on it too..you did a great job on it