Blizzard, apparently, lost the base of the old keys from the game StarCraft. And to get the original copy of the game you need to register at www.blizzard.com/account , click "Add new game" in your account and enter any old starcraft key (even the key generated by the keygen rolls), after which you will be given a new key and link to download the game. There is a complete anthology with videos and latest patches. There is a version for both Mac and Windows.