: An authoritative "paper-like" resource that catalogs the game's lore, including its connection as a late sequel to Mystery Trackers: Raincliff and the introduction of the Expedition Room for missed collectibles. Critical Game Insights Detectives United: Phantoms of the Past Walkthrough
: This 40-page guide is built into the Collector's Edition. It provides step-by-step instructions and puzzle solutions to ensure players "never get lost". Detectives_United_Phantoms_of_the_Past_Collecto...
: A highly detailed text-and-image guide that outlines specific item locations and puzzle solutions, such as finding the Town Crests and using the Circular Saw . : An authoritative "paper-like" resource that catalogs the
While there is no formal academic or research paper by that exact name, the most useful "paper" reference for is the official Strategy Guide , which is included as a digital manual within the Collector’s Edition and often referred to by players as a physical-style reference. Key Reference Materials : A highly detailed text-and-image guide that outlines