From the back of the case
"Saddle up for adventure!
Yoshi's back with a knee-high entourage!
Use new abilities!
Yoshi takes on a whole new set of abilities depending on whether he's carrying Baby Mario, Baby Peach, Baby DK, or Baby Wario.
Search for hidden treasures!
Hidden goodies like all-new character coins abound, so even after you finish the game, the challenge continues!
Double the trouble!
All the lush vistas and perilous paths of Yoshi's Island span two screens now!"