Kind of. The US version is a cut down of the Japanese film, with new insert footage of two very bored UN reporters and a very useless UN scientist, all discussing the film in the worst sort of Greek chorus - we're talking jerry Warren bad here. Also, the alien's ship from The Mysterians is passed off as a International Communication Sattelite.

The dubbing and music replacements aren't too bad, its the inserts that spoil the US version, grinding it to a halt every ten minutes or so.