Though not an exhaustive list of Fallout 4 secrets, here are some of the best references and hidden loot. The minute details scattered throughout the Commonwealth are often difficult to find-concealed on top of buildings, buried beneath sink holes, or subtly tossed into a crowded city. With such a massive world to traverse and explore, it’s no wonder so many Fallout 4 secrets remain a mystery. There is even one secret that reportedly has never been found. While keen-eyed fans have managed to uncover dozens of hidden gems, very few have managed to track all of them down. In fact, in the nearly four years since Fallout 4 was released, players have dedicated endless hours to hunting down the Fallout 4 secrets. There are enough hidden nods and Easter eggs in the Fallout universe to keep fans searching for years.