Navigate to your Warcraft III maps directory (usually found in Documents/Warcraft III/Maps/ ).
Downloading "cracked" or unofficial versions of custom maps for Warcraft III One Piece 14.0
: Place the file in your game's installation folder, usually C:\Program Files (x86)\Warcraft III\Maps\Download 3. Playing the Map Warcraft III Single Player Local Area Network Create Game
Copy the .w3x file into Documents\Warcraft III\Maps .