TGS 09: Series creator Hideo Kojima shows off new trailer for upcoming PSP installment in franchise, details storyline and Japanese-language voice cast.

One of Konami's main titles at this year's Tokyo Game Show was Metal Gear Solid: Peace Walker for the PSP. As has been the case for nearly every other installment in the Metal Gear franchise, series creator Hideo Kojima took to the stage to talk in-depth about his latest creation.

Kojima began by showing a new trailer for Metal Gear Solid: Peace Walker, which gave a look into the game's storyline. The trailer started out with a series of cutscenes from Metal Gear Solid 3, followed by a nuclear symbol appearing on the middle of the screen for a subliminal split second. We then see Snake saluting his mentor's grave from the last scenes in MGS3, and the flashback ended. The screen changed to new footage from Metal Gear Solid: Peace Walker, showing the game's setting as Costa Rica during the Cold War in 1974.