Deep beneath the streets of New York lies a world of wonder and adventure, hidden from the eyes of those above. Magic circulates like blood through veins of steel rails and transformers. The Underworld is home to the Homeless, the Monsterborn, the Wreckmen, and many other Monks. Steely-eyed Braves hunt their prey in the darkness of subway tunnels, while brave Graffiti find new paths between the Estates, marking the paths for those who come after them. Legendary creatures walk the platforms under the city, and from the madness of the brilliant Tinkerers, inventions inspired by bizarre science are born.

It is a world of heroes and villains, magic and romance, gods and monsters. Invisible. Unknown. Unforgettable.

UnderWorld is an adventure game that can be played both as a tabletop and as a live-action role-playing game. All you need is the basic rules in this book and a handful of coins.