To install and play this map:
Extract the contents of this archive to any folder. Then, move mars.pk3 into your /etmain folder inside of the Wolfenstein - Enemy Territory folder. Load the game, Choose Host, choose single-map objective, you will notice the mars level has been added to the list of playable levels.


To put this map into a custom campaign, grab this tool:
http://www.thepharaohs.lunarpages.com/MapRotation.zip


