Kingdom Hearts 3D [Dream Drop Distance] comes out in Japan this week and Square Enix is promoting the game with a TV commercials. One shows Vanitas (aka the Masked Boy) and a scene where Sora and Riku charge their keyblades together.

The second video shows some of the Dream Eater combo attacks and apparently Riku can surf on a shark-like Dream Eater. It looks like there is a mini-game too where Riku is darting through a stream of music notes.