Big monsters for little monsters...
Destroy All Monsters was amusing for young and eternal kids. It threw the franchise in a whole new direction with its massive clash of titans. In Godzilla’s Revenge, the lead is a bullied child who escapes reality by day dreaming of ‘Monster Island’. He never actually gets there, all the action taking place in his head, so the events in this are outside the Godzilla franchise timeline.
The problem for the true fan, and anybody, really, is that most of the good stuff is rehashed from previous films. Incidentally, the narrative, the editing and the flow suffer from it. There is no logic in the script, though it tries hard to tie the old footage with the new one. Surprisingly, most of the time, it doesn't strongly affect photographic continuity.
The best thing about this film is that it introduces kaijus to children. It is fast-paced, juvenile in tone and sticks to eye-candy, minimizing dialog. The running time being this short, there’s always something epically visual going on. This is the “gateway” Godzilla; a compilation of monster madness adapted for a young, perhaps persecuted audience fascinated by adventure, action and fantasy.