What is "i-ninja"

I-Ninja is an action video game developed by Argonaut Games and published by Namco. It was released for the PC, PlayStation 2, Xbox and GameCube (in Europe, the game was available only for the PlayStation 2 and PC). A Game Boy Advance version of the game was announced, then later cancelled. First print copies of the Gamecube version also included Pac-Man Vs.