Here are some words on the movie posters: Monsters = 3, terror = 2, giant, deadly, attack, invasion, colossal, amazing, hell, mad, planet robber, and then there's the one where the aliens come to abduct all the women and destroy everything else on earth.
People at that time loved for women to be in the arms of aliens, monsters, giant crabs, a colossal man, whatever that is that came from hell, the half human, and the mysterious aliens from space.
I guess people really like to see women prone, screaming and being carried away back in the 1950s.
