Jampack is a demo

Game demo

A game demo is a freely distributed demonstration or preview of an upcoming or recently released video game. Demos are typically released by the game's publisher to help consumers get a feel of the game before deciding whether to buy the full version....

 series from Sony

Sony

, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan and the world's fifth largest media conglomerate measured by revenues....

 to advertise and preview upcoming games through demos or featurettes. Often, it has previewed many popular games from the PlayStation 2

PlayStation 2

The PlayStation 2 is a sixth-generation video game console manufactured by Sony as part of the PlayStation series. Its development was announced in March 1999 and it was first released on March 4, 2000, in Japan...

's lifespan, ranging from SSX Tricky

SSX Tricky

A soundtrack was released in 2002. It features the following songs:#"It's Tricky " - Run-D.M.C.#"Smartbomb " - BT#"Finished Symphony" - Hybrid#"King of the Beats" - Aphrodite#"Board Burner" - Mix Master Mike...

 and Final Fantasy X

Final Fantasy X

is a role-playing video game developed and published by Square as the tenth title in the Final Fantasy series. It was released in 2001 for Sony's PlayStation 2, and will be re-released for PlayStation 3 and PlayStation Vita in 2012...

 to Need for Speed Underground and Tony Hawk's Pro Skater 3

Tony Hawk's Pro Skater 3

Tony Hawk's Pro Skater 3, often abbreviated to THPS3, is a skateboarding video game in the Tony Hawk's series. It was developed by Neversoft and published by Activision in 2001 for the Nintendo GameCube, Nintendo 64, Game Boy Color, PlayStation 2, and PlayStation. In 2002, it was published for the...

. They also sometimes include game saves. The Jampacks often served as a preview for the PlayStation Underground digital magazine and later online Ezine.

The Jampack discs are typically sold at low prices and bought by collectors.