Kamek, a magikoopa, prophesied that twins born this morning would bring ruin to the Koopa family. And as he predicted, that very morning a stork is delivering a pair of twins to their parents. Kamek grabs his broom and heads off to catch the stork in mid-flight. His plan is simple: Ambush the stork and kidnap the babies. But Kamek only grabs one, and the other baby falls to the island below.
Baby Mario lands safely on Yoshi's Island. The Yoshies find Mario, along with a map that leads to his parents' house. Using a relay system, the Yoshies must work together to reunite baby Mario with his brother, and make sure the twins get home safely.
At first glance, SMW2 looks like your average Mario platform game. Except this time, you control the very resourceful Yoshi. He can now throw eggs, pound the ground, ski, and morph into various vehicles. Baby Mario rides on Yoshi's back during the entire game. If Yoshi touches an enemy or spike, Baby Mario gets thrown off of Yoshi, and floats around in a bubble. If Yoshi can't reclaim him before the Countdown Timer reaches zero, Kamek's Toadies snatch Baby Mario away and you'll lose a life. The Countdown Timer resets at 10 seconds for each level, but can be raised to a maximum 30 seconds by collecting Stars and going through "middle rings."
- Platform-style adventure game
- Play as Yoshi, Mario's dinosaur sidekick
- Go back in time to save baby Mario from Kamek and Baby Bowser
- Includes classic Mario Bros. arcade game
- For 1 to 4 players