It happened in the span of a single night (or day, depending on where you were in the world): all the Earth's animals fell unconscious. We awoke fully sapient, to a world without Man. Those in captivity awoke to open cages, unlocked shackles, ajar doors and raised windows. We were free.
The entire human race had vanished, their great cities empty, their vehicles abandoned. The world belonged to beasts once more, as many had always hoped it would.
But there are some animals who weren't happy to see mankind gone. The dogs, mostly, and a sizeable portion of small cats, horses, and farm animals. They seek to preserve mankind's legacy, to honor the longpaws' wisdom and knowledge.
Others -- led by the apes -- saw the Culling as an opportunity to take Man's place. They, too, sought to preserve the longpaws' civilization, but only so they could exploit the great power it promises.
The rest... well, they chose to forge civilizations of their own in the shadows of Mankind's ruins. New nations are emerging, new ideologies and religions developing, new wars brewing.
The world belongs to beasts once more. But the Culling frightens them all. For if it could happen to Man, it can happen to any species.
"Legacy Of The Longpaws" (LotL) is a campaign scheme for Great & Small that takes place on modern-day Earth, shortly after the disappearance of the entire human species. The mysterious event that removed humanity from Earth also gifted all of the planet's animal species with human-level sapience, and freed every animal that been imprisoned or otherwise restrained by humanity's cages and buildings.
The new animal masters of Earth vie for dominance while searching for clues to the fate of humanity, some hoping to avoid it, others to reverse it.
LotL does not use rules for magic or fantasy creatures (though the Healer and Seer niches still exist), and relies on the game's default 2d10 core dice for task resolution, giving it a "reality-lite" feel.
All the maps you need are a Google search away. All the history can be found at the library or online. It is our world, today, just without us in it. The future belongs to the animals.
Required viewing: Life After People.