Godzilla Unleashed

Unleashed takes place twenty years after Godzilla: Save the Earth, beginning when a meteor shower causes climate shifts and earthquakes. Simultaneously, monsters of Earth begin attacking cities across the globe as a result of crystals growing on the ground. Factions form among the members of Earth as well as the monsters attacking them, totaling four monster factions. Choices within the story affect later events, including the relationships between Earth factions and the monster ones. (wiki)