Videos from Godzilla: Save the Earth's Website
These are videos that were once downloadable from the official Godzilla: Save the Earth website. The first trailer consists entirely of early build gameplay, though it doesn't contain any cut content. The melee gameplay appears to be recorded after the final build date, so there's nothing particularly interesting about it. The cinematic trailer is just the game's intro video.
Some of the differences between the 90 second trailer build and the final build are:
SpaceGodzilla has a bump map texture
Godzilla 2000 has a different intro camera
Monster Island has different skybox textures for both day and night (fun fact: the city select previews for Monster Island still use the skybox textures seen in this trailer)
The cut color effects for Anguirus's sonic roar appear to be present
The Mothership has a different skybox texture, which can also be seen in the city select preview
Jet Jaguar has a different animation for growing larger
The barriers are disabled on some cities
Godzilla 2000's rage attack has a different particle effect
Jet Jaguar's rage attack has a different particle effect
Kiryu has his DAMM intro animation
The G-Cells from the Mothership challenge are present in the versus mode version of the arena