The location of data file is different in the above mentioned operating systems. It is available for both Windows and Mac OS X. Need for Speed Most Wanted (2005) is the best game in NFS franchise. If you have taken the backup of your alias data file, then u can easily restore the progress of your game by copying back your data file to the location i will be discussing later in this post. The advantage of taking backup is when you format the computer & reinstall the operating system, all the data is lost. This method may also work for other version of this game (1.0, 1.1, 1.2). This post tells you about how to backup user data file ('alias' term is used in NFS game) on Need for Speed Most Wanted (2005) version 1.3 Black label edition.