Yu-Gi-Oh: Duelist's Wasteland

The shadow realm has bled into earth, covering the world in its dark mist. The Darkness and his apostles, natives from the shadow realm had collapsed civilization in the span of days, as humanity was brought to the brink of extinction. The only way to defeat the Darkness was to win in its own games, the Shadow Games. The fate of mankind now rests in the hands of duelists.