I Ninja is a 3D platform title starring an original character created by British developer Argonaut Software. Players control a spirited young ninja as they make their way through a diverse selection of indoor and outdoor locales. The title character is garbed in a blue suit and matching hooded mask, so that only his eyes and his expressive brow are visible to players. The character also wields a pair of katana blades in both hands as he jumps from platform to platform, avoiding hazards and slicing at enemies. The cartoon-style atmosphere is brought to life with the use of cel-shaded graphics, giving the game a distinctive look from many of its platform contemporaries.

I-Ninja is an adrenaline-charged adventure game. An ultra-cool ninja with major attitude meets extreme sports game play, I-Ninja is the consummate warrior who has spent years mastering his weapons and honing his skills. In true gravity defying game play, I-Ninja can scale buildings, "shred" on extreme rails, hover great distances with a "sword copter", ride drifting roller spheres and utilize specialized manga-style ninja moves to navigate through each dynamic environment.