Here in the states, Hollywood takes us literally when it comes to posters. The Godzilla posters show Godzilla. If the marketing department wants to be mysterious, they show Godzilla's back side shrouded in fog and maybe a slight mist of destruction. If they want to be brazen and bold, Godzilla is shown closeup. Godzilla is Godzilla is Godzilla.
In Europe they are more playful, symbolic with Godzilla-- and if the artist is in a high state of creative angst, head-scratching imponderable.
The Polish posters win for symbolism. The Godzilla VS The Smog Monster poster (above) stands out for its weird symbolic beauty-- making the Smog Monster as much part of Godzilla as the trampled cityscape shadows that are the monster's stomp. The Godzilla VS MechaGodzilla (below) is both grandly psychedelic and archly reactionary in the way Godzilla casually zings hippies with his lightning bolt vision. Imponderables doom the truly innovative monster design that ends in a faux Angry Birds mug (penguin looking in this case) for the Invasion of Astro-Monster sheet. The same for the bewildering calcified and fossilized layers of beastliness with the oddly cartwheeling cockroach (maybe a Franz Kafka "Metamorphosis" reference) that is the Godzilla VS Gigan anti-creation. Playful rainbow geometry makes the original Godzilla and the Son of Godzilla a visual delight. And Alien, which came out roughly the same time as Godzilla VS The Sea Monster, gets a wacky reference in the final Polish poster.
A lone Czech poster for the original Godzilla creatively captures the creation of a monster in the implied flight of atoms.
The French (Godzilla, Godzilla VS Megalon and Invasion of Astro-Monster) and German (Godzilla) stick to the fear of losing Planes, Trains and Automobile and other industrial age infrastructure.
The Italian poster for Godzilla Raids Again has a crisp Cinecitta Studios design, while the Godzilla VS Smog Monster has a Sword and Sandal epic Herculean familiarity.