This is just a CD, even though it's called a 'generator'. It was released for free, for the Sega Dreamcast. It's basically a sampler with game demos, movie clips and sometimes mini videos for you to watch. It would play if placed into the DC console. Dreamcast Magazine Official could also give these out. This is volume 1, and it had a demo of Sonic Adventure on it. Dreamcast really pioneered free samples of games and preview videos etc. that are so common today.