Colossus: The Forbin Project is a 1970 American science fiction thriller film from Universal Pictures, produced by Stanley Chase, directed by Joseph Sargent, that stars Eric Braeden, Susan Clark, Gordon Pinsent, and William Schallert.
Dr. Charles A. Forbin is the chief designer of a secret project, “Colossus”, an advanced supercomputer built to control the United States and Allied nuclear weapon systems. Located deep within a mountain and powered by its own nuclear reactor, Colossus is impervious to any attack.
After Colossus is fully activated, the president of the United States proudly proclaims that Colossus is “the perfect defence system”.
Colossus’ first action is a message warning: “THERE IS ANOTHER SYSTEM” and its location. CIA Director Grauber is asked why the CIA did not know this, but Grauber tells the President that they had seen indications of a large Soviet defence project.
Forbin is asked how Colossus deduced the other system’s existence, to which Forbin answers “Colossus may be built better than we thought.” The Soviets then announce that their own advanced defence system, “Guardian” is now operational.
Thinking this will prevent war, the US government gives an impenetrable supercomputer total control over launching nuclear missiles. But what the computer does with the power is unimaginably dictatorial as it seeks to control the entire world.