Between the years 2025 and 2030, humanity walks blindly toward an abyss of chaos and conspiracy. Beneath the surface of a collapsing world, invisible forces prepare the Great Reset - an extinction event architected in the shadows, centuries in the making. Book of Monsters is the essential guide for players and Game Masters who dare to explore the darkest entrails of Earth. Within these pages lies a disturbing catalogue of horrors - creatures, entities, and fanatics that move between the visible and the invisible, the human and the unnameable. Here, there are not only men and women corrupted by profane doctrines. There are spiritual entities that tear through the veil of dimensions, shaping human destiny at their whim. There are creatures forged in forbidden rituals, born from fanaticism and the thirst for power. There are abominable experiments, the offspring of science and delirium. There are mental and astral manifestations that turn fear into matter - and madness into reality. More than a mere compendium, this book offers the Game Master narrative and mechanical tools to craft memorable encounters and oppressive atmospheres. Each creature presents its strengths, weaknesses, and mysteries, enabling adventures of infiltration, paranoia, and resistance against the cults and organizations hidden beneath the mask of everyday normality. Book of Monsters is not a manual. It is a portal to horror. With it, the Master can weave stories where every corner may c