Tool – Sandbox World Generator for D&D 3.5
Procedurally generated continental maps with monsters and kingdoms for use in tabletop D&D games. Kingdom details include the number and levels of each class in the kingdom, local guilds, trade goods, heirloom magic items, and more.
The screenshot is part of the world I’ve been running my campaign in for the last two years (you can read the recap on http://mcplanck.blogspot.com/). All of the politics and adventures were inspired by the generator.
You can literally push a button, click twice to zoom in, and start running a game, knowing that no matter which random direction your players decide to go you’ll have something ready. And it’s easy to edit if you want to change the encounters or just erase them as your players clear out the local area to build their castle.