The Original "Starcraft" was a fantastic game.  One of the top three best RTS games I have played.  It had great maps and scenerios and great units and species.  For those of you who are not familiar with the game, the original had too do with three species: The Terran(Humans) who have lived upon several planets in a solar system after there space ships crashed many years before stranding thousands of people.  The Prottos, a powerfull race form a planet "Auir" armed with powerfull physical weapons and devastating Phsycic weapons.  And Finally the Zerg.  A vicious race controlled by a center mastermind know as the "Overmind", who travel across the universe incorpirating every worthy race into there species or destroying them.