Due out February 27th, this Nintendo DS has the player taking on the role of Princess Peach to rescue Mario, Luigi, and Toad from Bowser. And it's set up like Super Mario World. Well, mostly.
Instead of Yoshi, Princess Peach has a magic umbrella that preys on flesh of the living. Also, you need to manipulate the princess's emotions to pass different obstacles. For instance, making her cry can water nearby sprouts, turning them into vines that she can climb. Like most women, Princess Peach has only four emotions: Happy, Sad, Angry, and Yellow.
You can DL videos of the gameplay at the link below, but you'll have to endure the Final Destination 3 trailer or some other product placement to do so:
http://media.ds.ign.com/media/711/711851/vids_1.html