The playstation portable ( psp) is a handheld game console developed by sony. Development of the console was announced during E3 2003, and it was unveiled on may11, 2004, at a sony press conference before E3 2004. The system was released in japan on december 12, 2004, in north america on march 24, 2005, and in the PAL region on september 1, 2005. It primarily competes with nintendo DS, as part of seventh generation of video games. The playstation portable become most powerful portable system when launched, just after the nintendo DS in 2004