Super Mario Galaxy 2, released in 2010 for the Nintendo Wii, was a critical and commercial success, praised for its innovative gameplay mechanics, charming graphics, and immersive soundtrack. One crucial aspect of the game's development and distribution was its use of WAD ( Wii Application File) files. These files played a pivotal role in the game's installation and execution on the Wii console. This essay explores the significance of Super Mario Galaxy 2's WAD file, highlighting its function within the context of Nintendo's Wii era.