Call of Duty: Modern Warfare Remastered is a first-person shooter game developed by Raven Software and published by Activision. The game was initially released in 2007 and has since become a classic in the Call of Duty franchise. In 2016, a remastered version of the game was released, featuring updated graphics, sound, and gameplay. This report will focus on the Codex, a digital version of the game's manual, and how it enhances the overall gaming experience.