Yoshi's Island: Super Mario Advance 3 Game Boy Advance

The twist in Yoshi's Island is that you control Yoshi for the majority of the game, not Mario. Baby Mario rides on Yoshi's back as you travel through six worlds (with eight stages per world) on your way to Kamek's castle. When Yoshi is hit by an enemy, Mario falls off and floats in a bubble. You then have a limited amount of time to regain Mario before the toadies capture him and you lose a life. When you grab a Super Star, Mario, whom you will control for a short time, will powerup and become an invincible little tike who can do a whole lot of damage to enemies.

Crafty dinosaur that he is, Yoshi can run and jump and he can use his lashing tongue to grab enemies. He can then spit the enemy out or swallow the enemy to create an egg, which will grant you a coin, two stars, or a special red coin. Yoshi can find watermelons that will enable him to spit seeds, fire, and ice at the enemies. Also, by touching a metamorphosis bubble, Yoshi will temporarily become a helicopter, a mole tank, a submarine, a train, or a car. ~ Brett Alan Weiss, All Game Guide