Baby Mario isn’t alone in Yoshi’s Island DS, he’s joined by Baby DK, Wario, and Peach. Each baby gives Yoshi different powers when Mario is on his back Yoshi gets extra speed, Peach gives him the ability to fly and DK gives Yoshi extra strength. Yoshi has all of his trademark egg-throwing, ground pounding, flutter jumping and vehicle morphing movies from previous games in the series. Similar to Yoshi’s Touch and Go action takes place on both screens. See the screenshot of the Shy Guy on stilts? The only way to hit him is nail him with eggs from below.
So why is Yoshi going on an adventure? When all of the babies are hanging out on Yoshi’s Island Kamek attempts to snatch them away. Baby Mario, Peach, DK and Wario escape, but Baby Luigi gets nabbed by Kamek. Yoshi and all of the babies jump to rescue him. Poor Luigi he’s always getting in trouble.