It was MEANT to be private. That is why. Oh and the only closest thing you can get to Starcraft 2 would be 3rd Party Patch

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The creator gave it to 5 of his personal friends. One of them leaked the map to more of his own friends. somewhere along the line Archn got ahold of it and hexedited the name to make it seem as if he created it. Then he mass distributed it. finding the unhexedited version is very difficult. I have found it a few times but I never keep it after i download it.