Jampack is a demo series from Sony under its PlayStation Underground brand. It was used to advertise and preview upcoming, as well as already released PlayStation and PlayStation 2 games through demos and featurettes. Often, it also included imported game demos, behind-the-scenes videos on developers and games, as well as cheat codes and saved games. The Jampacks often served as a preview for the PlayStation Underground digital magazine and later online Ezine.
The series has previewed many popul…