Since Godzilla (Quicktime trailer) is being re-released in the United States in the original version, I figure it’s a good time to mashup that very movie. The scoop on all things Godzilla is long and intricate; feel free to draw from any element of the mythos.
Monsters coming from beneath the waves to destroy civilization? Sounds like Call of Cthulhu to me.
The monster Godzilla has returned. Last week, seismologists at the University of Tokyo detected anomalous seismic events emanating from a location 500 miles from Hawaii in the Pacific Ocean. Two Japanese destroyers were sent to investigate; they were lost with all hands. Yesterday, satellite photographs revealed Godzilla, making his way towards Tokyo yet again.
The seismic events have since been analyzed and found to match similar events occurring at the time of the last Godzilla assault. There are some slight differences, centering around Antarctica, but these are not thought to be significant. The President of Japan has guaranteed that his next budget will fund an ongoing watch for such events, in order to provide more warning should Godzilla return once more.
Meanwhile, a local cult predicts that Godzilla’s return signals, quote, that the stars are right.
You do this one as any of the good-guy Godzilla vs. a monster movies, except that the monster is Cthulhu and Godzilla (along with the rest of the world) is doomed. Godzilla may buy enough time for the PCs to disrupt the rituals that woke Cthulhu. For a nasty modern spin, Aum Shinryu is the Cthulhu cult; that’d be a decent Delta Green scenario, even.