The Game Boy is the most popular handheld gaming console ever. It allowed us to take games like Tetris, Super Mario Bros. and The Legend of Zelda with us on-the-go, changing the gaming industry and our free time forever. On the 30th anniversary of its release, Marques Brownlee unboxes and explores how the Game Boy came to be, it's impact on society, and why it's leaving us feeling so nostalgic.