Tutorial for finding your game world save files on Windows and how to manipulate them. I demonstrate how to rename, copy, and install game world save files from a ZIP file. For example, if you download a game world file from a friend or website, you will learn how to install it in your Minecraft folder so you can play it.
To test, download my game world here:
http://www.youtube.com/watch?v=2Z0lsbRl1rE
If you're on a Mac, check out this tutorial:
http://www.youtube.com/watch?v=3w1u3QOJhDQ