Ontamarama hands-on at joystiq.

"Ontamarama! It really is fun to say, a polysyllabic power trip, if you will. Naturally, we were more than a little disappointed when the folks at the Atlus E3 booth proceeded to tell us about the game in a restrained and entirely professional manner. We think of "Ontamarama" as something you scream with cheerleaders doing cartwheels in the background, fireworks exploding and confetti raining down from the sky. Perhaps they're saving that for the launch party.

Much like its name, there's an oddly fun and somewhat unhinged element to be found in the game itself. Though the version shown was still very much cloaked in the Japanese language, it was the music-and-rhythm gameplay itself that initially perplexed us. After several bouts of tapping the DS screen and pressing directional buttons in tandem with the music (what little we could hear over the blare of Barker Hangar), we repeatedly wound up staring at the same screen. The colorful characters displayed were just being polite about it -- we failed miserably at this game. It took a few more tries and some helpful coaching from Atlus before we heard a more familiar sound... "click."

Full Source: joystiq