Unfortunately, there's nothing to open the .Pak file on Mac OSX. In the past, there's a program able to do that, but it's not available anymore...
But you still can change the Tournaments & Players, because they are in separate .ini files, which are just plain text files that you can open with any text editor.
But you can still add to your Mac version any Mod made by other people on PC.
== Mana Games ==
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