- Bad Export for You: The 2014 Blu-ray by suffers heavily from including very loose subtitles that sometimes translate whats being said, but mostly copies the Omni Productions dub beat by beat. Then theres the rather noticeable purple tint that appears in specific shots, and the rather ugly English title overlays.
- Refitted for Sequel: M.O.G.U.E.R.A. being able to split into two separate mecha was one of the concepts for Mechagodzilla in the previous films.
- What Could Have Been:
- The original idea for the film was to introduce a new version of Ghidorah, closer to the Showa Era version, called Emperor Ghidorah, this concept was put aside do to Yamato Takeru having a similar monster in the form of Yamata no Orochi. The second Ghidorah would've been explained as being the template the Futurians used to create their Ghidorah.
- The film was originally going to be called "Godzilla vs. Astrogodzilla," and was to feature a completely different story: Astrogodzilla was to be an Albino Godzilla with wings, two tails, and Ice Powers (also confirmed to be created by Biollante's cells, instead of a toss-up between Mothra and Biollante.) Astrogodzilla kidnaps and hypnotizes Little Godzilla and Miki Segusa, using Miki as his personal translator, and holding Little Godzilla hostage. Godzilla, along with M.O.G.U.E.R.A. and Mothra, all team up to fight Astrogodzilla and save Miki and Little Godzilla. The film was planned to have a more showa-like vibe in comparison to the other Heisei films as well. However, after Toho's other film, Yamato Takeru bombed at their box office, Toho got cold feet and the film had to be heavily cut done into something much more run-of-the-mill, transforming it into SpaceGodzilla.
- Mechagodzilla was to be rebuilt from the previous movie, but Toho decided to use Moguera instead because they realized the film had too many Godzillas.
- Early on the film to be in this slot was entirely different and instead would have been a crossover between the Toho Godzilla and initial version of the Tristar Godzilla, featured in the Godzilla (1994) script. Reports vary on if it was going to be a full film or a short, but it was meant to act as a promotion and tie-in to the still in-pre-production Tristar film. However, the reworking of the Tristar film and a studio policy asking for no direct Godzilla vs. Godzilla films meant it wasn't made.
- One draft that came between this film and the Godzilla vs. Astrogodzilla draft was a film called Godzilla vs. Neogodzilla. It followed the same plot that vs. Spacegodzilla would eventually follow ( a crystalline clone of Godzilla comes down to Earth in order to kill the original) and Crystal Godzilla, unlike Astrogodzilla, did apparently transform, having a "space form", "flying form" and "mature form".
Trivia / Godzilla vs. SpaceGodzilla