The special attacks will have varying motion inputs. Some inputs require you to swing the Wii remote up or down while other specials will require you to twirl the remote with specific timing. Some attacks will also use the motion sensing in the Nunchuk, as well. Some gestures will be shared among characters, but the gestures are varied enough that they won't be identical in terms of timing and execution.

Where we're including characters from previous games, if the animations for the attacks are the same, then they'll be reworked to meet the Wii specs. However, for new characters and new attacks, including new special attacks, the animations will be newly created.

The content will be adjusted to fit with the current U.S. TV release schedule. They will have different gameplay mechanics to the main game but will use techniques that you learn in the game. One game uses the ability the throw shuriken, one is a game based around Naruto's clone jutsu technique and another gives you the opportunity to practice Naruto's Rasengan.

Via IGN