Its high-end graphics made the PlayStation Portable a major mobile entertainment device. It was the first real competitor to Nintendo’s handheld domination, where many challengers, like SNK’s Neo Geo Pocket and Nokia’s N-Gage, had failed. The PlayStation Portable was the most powerful portable console when launched. 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. Development of the handheld was announced during E3 2003, and it was unveiled on May 11, 2004, at a Sony press conference before the next E3. It primarily competed with the Nintendo DS, as part of the seventh generation of video game consoles. The PlayStation Portable (PSP) is a handheld game console developed by Sony Computer Entertainment.