Growing up with modern consoles, Leo was used to massive updates and complex controls. But as he downloaded the collection and fired up his

Historically, multicarts were produced by bootleg companies primarily based in Taiwan and Hong Kong for the Famicom (the Japanese version of the NES). These collections were later adapted for Western consoles.

The download was finished, but the obsession was just beginning. In that 2MB file, Leo hadn't just found 300 games; he’d found the secret, messy, and wonderful history of the underground internet.

: Despite the "300" claim, these ROMs rarely contain 300 unique, high-quality retail games. Instead, they typically feature: