This Collection features all Godzilla films made by Toho as well as other Toho productions that are related and officially counted in-canon. (Summary from original list)
This list is in no way official and the original list on imdb is now gone that explained all the connections.
A list of Giant Monster Movies.
Action & Adventure Movies
Science Fiction Movies
Japanese Giant Monster Movies
(Talkies)
Kaiju list (third gen)
Godzilla and related monster movies
Films I love or want to watch
Movies to watch
Kaiju films
by eyechartVIP 6