What is playstion underground?

PlayStation Underground was a subscription service offered by Sony that provided members with exclusive content, demos, and information about upcoming PlayStation games. It was first launched in 1997 and was available to players in North America.

Members of PlayStation Underground received a quarterly disc that contained various content such as game demos, trailers, interviews with developers, and behind-the-scenes footage. They also had access to special events, competitions, and promotions.

The service aimed to give players a sneak peek at upcoming games and provide them with unique gaming experiences. PlayStation Underground was discontinued in 2002, but some of its features were integrated into the PlayStation Network, which still offers exclusive content and early access to games for its subscribers.