Sinistar: Unleashed - PC A game for the next millennium Product Information Sinistar&reg;: Unleashed blasts you into a hostile universefraught with danger. A space dwelling species of supreme evil is on theverge of creating the ultimate bio-mechanical weapon: the Sinistar. Whenthey succeed, they will invade our universe, annihilating humanity andall other life. You must destroy these evil beings before they embark o