There are two distinct versions of the American International Pictures version of this film, which is titled "Godzilla vs. the Smog Monster." The first version, presumably the original 35mm theatrical version, features an English language cartoon sequence (reworked from a similar Japanese language one in the Japanese version). A similar insert replaces a shot of a newsreader with an English language map of Fuji City. In addition, AIP removed all of the Japanese text from the scenes of various "science lessons" given by Dr. Yano. This is the version that was released on VHS and LaserDisc by Orion Home Video in 1989. The second version, however, has none of these unique shots. The Hedorah cartoon and newsreader scene are unchanged from the Japanese version and Dr. Yano's science lessons feature onscreen Japanese text. This version seems to have been the standard 16mm release for television distribution and can be seen mostly in unlicensed home video releases of the film, such as the 1990 Simitar VHS release from the U.S. and the Digital Disc DVD release from Canada.