The document traces the evolution of The Legend of Zelda series over time from its origins in the 1980s to modern games. It notes that while the graphics, technology and gameplay have advanced significantly from the original 2D titles to fully 3D worlds, Link has maintained consistent visual traits like his green hat and tunic. Major milestones included Ocarina of Time being the first true 3D game in the series in 1998 and Twilight Princess featuring highly detailed graphics in 2007.