In 1990, SEGA, an emerging arcade company, gathered a group of unconventional individuals to challenge the world’s leading video game giant, Nintendo. This unprecedented, all-out rivalry set siblings against each other, pitted children against adults, and saw Sonic face off against Mario, symbolizing a clash between American capitalism and ancient Japanese customs. For the first time, the people who were at the forefront of this generational battle for Sega and Nintendo share their experiences.