Vecna: Eve of Ruin is a Dungeons & Dragons adventure that takes players through well-known locations as they save the world from Vecna, the god-turned-lich. The party travels to the Forgotten Realms, and later to Planescape, Spelljammer, Eberron, Ravenloft, Dragonlance, and Greyhawk, to stop Vecna’s ritual to eliminate good, obliterate the gods, and subjugate all worlds.