The Japanese version includes a prologue featuring Susumu Kurobe and Kazuo Suzuki viewing Godzilla from the air.
In the American version, Saeko's name was changed to Reiko and the monsters Kumonga's and Karakuras' names were changed to Spiga and Gimantis respectively.
USA DVD is uncut, featuring the original opening listed above. It is also letterboxed and features the original Japanese language Track with Optional Subtitles (with the original names intact).