The Mysterians

The Mysterians come from an exploded planet and aren't the friendliest aliens: they start forest fires and landslides, and send up a galumphing robot monster. They ask for three kilometres of Japan, but really want the whole earth; most ghastly of all, they kidnap women to propagate their kind. Still, we humans aren't very nice in return, and it's not long before this lively sci-fi extravaganza from Inoshiro Godzilla Honda has turned into an out-and-out war film, with tanks and ray guns trundling and blasting away in the midst of lavish but variable special effects.