Beneath the sprawling metropolis lies Undercity, a labyrinthine complex of ancient chambers, twisting corridors, and decrepit architecture that tells tales of forgotten civilizations. A mixture of rotting wood, rusted iron, and age-worn stone constitutes the bulk of its construction, with claustrophobic passages opening into grand halls supported by intricately carved columns. Hidden waterways filled with stagnant, murky water snake through the subterranean...