The mod "When Dungeons Arise" is a massive dungeon generator mod for Minecraft that adds various elegant and likely hostile roguelike dungeons and structures. These dungeons generate randomly in your Minecraft worlds, offering adventurous challenges. The mod contains over 30 unique and imposing structures, including palaces, hostile airships, bandit towers, mines, and many more. These structures are large, sometimes scaled up massively, filled with challenging enemies often akin to mini-bosses, and contain valuable loot such as netherite equipment and diamond blocks. The mod is available for both Forge and Fabric mod loaders and supports Minecraft versions ranging roughly from 1.14 to 1.20 depending on the mod version. In summary, "When Dungeons Arise" dungeons arise (generate) randomly throughout your Minecraft worlds as you explore, ensuring a vast array of large, detailed, and dangerous dungeons to encounter and conquer.