Rock Band Unplugged

Rock Band: Unplugged is a new game in the Rock Band franchise exclusively for the PSP. Unlike the console versions of Rock Band, Unplugged will not feature any external peripherals or special controllers.

A full version of the game was leaked on a number of torrent sites on May 17, 2009. It includes an option for downloadable music.Destructoid: Rock Band Unplugged leaks (May 17, 2009)

Game Details

Few official details about Rock Band: Unplugged have been released, but Sony confirmed during its annual Destination PlayStation retailer event that the game would be exclusive to the PSP. Sony also said the game would "leverage the PSP system’s Wi-Fi capabilities" and would be the first PSP game to take advantage of an in-game store.Playstation.blog: Destination Playstation News

Other outlets have reported that the game will not make use of any external peripherals, instead containing gameplay similar to Harmonix' previous PS2 releases, Frequency and Amplitude. In those games, the music was divided into separate tracks, and the player pressed buttons on the controller in time with the beat to capture "phrases" before moving on to the next track.Primotech: EA Publishing Rock Band Unplugged for the PSP

The game is reported to be in development at Backbone Entertainment, a studio that's developed a number of games for the PSP, including the Death, Jr. series of games, NBA Ballers: Rebound, and The Sega Genesis Collection among others. Some of Backbone's other releases include Super Street Fighter II Turbo HD Remix and Super Puzzle Fighter II Turbo HD Remix for Xbox 360 and PS3Developer Site: Backbone Entertainment