BZW - BZFlag World File is a word file extension that is very easy and convenient to use. It can be used by different tank simulation games. They all consist of different game worlds, maps, and much more. You can also use this type of file extension to define different elements of fames. Weapons and teleporters are both included. You can also define new custom maps with this file extension. You can also load different options when using this extension only while you are playing the game. Mac, Windows, and even different Unix platforms all support this type of file extension. They all use OpenGl tech. You will also be able to load your files by simply using the command line option which is included with the extension.