CHIBA -- The country's largest video game show kicked off its three-day annual run here Friday, with a record 117 firms showcasing their latest products and nearly 500 new game titles unveiled.

Sony's PlayStation Portable enjoyed the limelight at Tokyo Game Show 2004, surrounded by a bevy of scantily clad promotional staff -- some of who were dressed as game characters -- and a myriad of game consoles and glaring screens.

The event at the Makuhari Messe convention center provides the first occasion for the public to test the PSP's 22 game titles.