Godzilla Vs. Gigan aka Godzilla on Monster Island

"Godzilla Vs. Gigan" starts the heavy use of recycled effect footage. Godzilla ends up with a lot of screen time, however a lot of that is stock footage or spent swimming. This movie was also a later release in the US not coming out till 1977 five years after it came out in Japan. And called "Godzilla on Monster Island" even though he spends very little time on said monster island.

Godzilla Vs. Hedorah aka Godzilla Vs the Smog Monster

The 70's brings a new era to the Godzilla franchise, the superhero / pro-wrestling era where Godzilla is the protector of Japan / Earth and fights daikaiju that threaten the peace. "Godzilla Vs. Hedorah" aka "Godzilla Vs. the Smog Monster" is also the biggest message movie since the original and the director gives the movie a independent / art film feel which fans of the franchise either like or hate. It also has the most screen time for Godzilla and his opponent double that of almost all previous films.

All Monster Attack aka Godzilla's Revenge

When Toho wants another Godzilla movie but doesn't want to spend a whole lot? What you get is Minilla staring in a very special PSA about latchkey kids, bullying, and what to do if you are kidnapped by bank robbers. With lots of stock footage from earlier Godzilla movies.

Destroy All Monsters

What happens when you try to end a franchise with a huge extravaganza? You end up revitalizing to genre into the next decade. Toho took every useable daikaiju suit and made a couple of new ones and through them together into on epic film that ends the golden age of daikaiju movies.

Son of Godzilla

Godzilla's south seas vacation continues and we are introduced to Minira or Minilla the small grey pudgy daikaiju nobody asked for.