Superman (Christopher Reeve) foils the
plot of terrorists by hurtling their nuclear
device into outer space, but the bomb's shock waves free the Kryptonian villain
General Zod (Terence Stamp) and his henchmen Ursa (Sarah Douglas) and Non (Jack O'Halloran) from their imprisonment.
Through the use of an in - game clock, MM was able to use its
plot device of an ever - encroaching moon to put the player in a position that had thus far unthinkable in the series and even in games in
general: one of powerlessness.