Century III

Have you seen world anvil (www.worldanvil.com). It is a freemium wiki geared to world playing games. I have been doing some campaign building in it, and I think it would be excellent. It allows for multiple authors. and has temples for content such as characters and locations.

Re: Your PCs might be overpowered if... - You can leg sweep The Republic of Korea - The Earth takes knockback before you do...