The .ini Hack is a way of viewing certain particular screens from TLJ through the Book of Secrets from the menu screen. By changing some values in the file "w_world.ini" it is possible to view material removed from the final version of the game, such as the FACT machine and the Swamp puzzle. The file is located in the game's main folder, and normally appears like this: Thanks to Seraphan for providing the .ini hack.