Logic puzzles were an integral part of The 7th Guest's gameplay, and The 13th Doll follows suit.
In the 7th Guest, evil toymaker Henry Stauf built a mansion, and invited 6 guests. A decade after Tad managed to escape the mansion, he is still haunted by the souls, dolls, and Stauf's victims he left behind. While playing The 13th Doll, a lot of time will be spent navigating through gloomy sites, concealed rooms and maze areas from an immersive first person perspective. So haunted, in fact, that the young man now resides in a mental institution - misunderstood, plagued by guilt and obsessed with one idea: to escape the dreary padded walls of his asylum cell, return to the mansion - the site of his innermost fears - to rescue those he left behind and defeat Stauf once and for all! A 7th Guest, Tad, snuck in and was trapped there, afflicted by mystifying spirits, dolls and the ghosts of the other guests - until he defeated Stauf.