Super Mario World 2: Yoshi's Island

Super Mario World 2: Yoshi's Island was the second game in the Super Mario World series, and the first game to star Yoshi. Super Mario World 2: Yoshi's Island was later re-released for the Game Boy Advance under the title Super Mario Advance 3: Yoshi's Island. A heavily-criticized sequel, Yoshi Story, was released for the Nintendo 64, and a Nintendo DS sequel named Yoshi's Island DS was also released. Yoshi's Island is the first game to feature Mario as a baby.

Plot
One night, The Stork was carrying two babies across the sky. These two babies were Baby Mario and Baby Luigi, the future heroes of the Mushroom Kingdom. Suddenly, a strange figure, Kamek the Magikoopa, flew by on his broomstick and hit the stork. He snatched Baby Luigi, but the other baby fell down towards the ocean. When Kamek discovered his mistake, he sent his Toadies to find and capture the missing baby. Meanwhile, the other baby, Baby Mario, had fallen on Yoshi's Island on top of a Yoshi. Along with the baby fell a map, but the Yoshi could not make sense of it. He consulted his other Yoshi friends and told him what had happened. After some talking, the green Yoshi found out what the baby really wanted – he wanted to save his brother from Kamek. So the Yoshis decided to help the baby and they set out on an adventure to rescue Baby Luigi from Kamek and his Toadies.

Worlds and Levels
"Secret" levels are only in the Advance version.

World 1
World 1 takes place in a grassy plain, and gives a taste of the different types of stages in the game.
 * 1) Make Eggs, Throw Eggs
 * 2) Watch Out Below!
 * 3) The Cave of Chomp Rock
 * 4) Burt the Bashful's Fort
 * 5) Hop! Hop! Donut Lifts
 * 6) Shy Guys on Stilts
 * 7) Touch Fuzzy Get Dizzy
 * 8) Salvo the Slime's Castle
 * Secret: Exercise in the Skies
 * Extra: Poochy Ain't Stupid

World 2
World 2 is a dusky forest. It's similar to World 1, but with harder platforms and enemies.
 * 1) Visit Koopa and Para-Koopa
 * 2) The Baseball Boys
 * 3) What's Gusty Taste Like?
 * 4) The Bigger Boo's Fort
 * 5) Watch Out for Lakitu
 * 6) The Cave of the Mystery Maze
 * 7) Lakitu's Wall
 * 8) The Potted Ghost's Castle
 * Secret: Mystery of the Castle?
 * Extra: Hit That Switch!!

World 3
World 3 is located in a steamy jungle, and serves as the game's water level.
 * 1) Welcome to Monkey World!
 * 2) Jungle Rhythm...
 * 3) Nep-Enut's Domain
 * 4) Prince Froggy's Fort
 * 5) Jammin' Through the Trees
 * 6) The Cave of Harry Hedgehog
 * 7) Monkeys' Favorite Lake
 * 8) Naval Piranha's Castle
 * Secret: Go! Go! Morphing!
 * Extra: More Monkey Madness

World 4
World 4 takes the player to a hot desert with many traps and harder enemies.
 * 1) GO! GO! MARIO!!
 * 2) The Cave of the Lakitus
 * 3) Don't Look Back!
 * 4) Marching Milde's Fort
 * 5) Chomp Rock Zone
 * 6) Lake Shore Paradise
 * 7) Ride Like the Wind
 * 8) Hookbill the Koopa's Castle
 * Secret: Fight Toadies w/ Toadies or Fight Baddies w/ Baddies
 * Extra: The Impossible? Maze

World 5
World 5 takes place on an icy mountain. The first four stages take place on the mountain, while the last four are in the sky.
 * 1) BLIZZARD!!!
 * 2) Ride the Ski Lifts
 * 3) Danger - Icy Conditions Ahead
 * 4) Sluggy the Unshaven's Fort
 * 5) Goonie Rides!
 * 6) Welcome to Cloud World
 * 7) Shifting Platforms Ahead
 * 8) Raphael the Raven's Castle
 * Secret: Items are Fun!
 * Extra: Kamek's Revenge

World 6
World 6 is located in Bowser's Kingdom. It's full of lava, spikes, and other traps.
 * 1) Scary Skeleton Goonies!
 * 2) The Cave of the Bandits
 * 3) Beware the Spinning Logs
 * 4) Tap-Tap the Red Nose's Fort
 * 5) The Very Loooooong Cave
 * 6) The Deep, Underground Maze
 * 7) KEEP MOVING!!!!
 * 8) King Bowser's Castle
 * Secret: Endless World of Yoshis or Crazy Maze Days
 * Extra: Castles - Masterpiece Set (called Ultimate Castle Challenge in remake)

Enemies
Enemies marked with * are exclusive to Super Mario World 2: Yoshi's Island and the Gameboy Advance remake. Italic is invincible, and Bold is almost invincible.


 * Aqua Lakitu*
 * Bandit
 * Baron Von Zeppelin
 * Barney Bubble
 * Bat
 * Beach Koopa
 * Big Boo
 * Biting Bullet Bill*
 * Blow Hard
 * Boo Balloon*
 * Boo Blah*
 * Boo
 * Boo Guy
 * Boo Man Bluff
 * Bouncing Bullet Bill*
 * Bowling Goonie*
 * Bubble Dayzee*
 * Bullet Bill
 * Bumpty
 * Burt
 * Cactus Jack*
 * Caged Ghost*
 * Clawdaddy
 * Cloud Drop
 * Coin Bandit*
 * Crazee Dayzee
 * Dancing Spear Guy
 * Dangling Ghost*
 * Dizzy Dandy
 * Dr. Freezegood
 * Eggo-Dil
 * Fat Guy
 * Flamer Guy
 * Flightless Skeleton Goonie
 * Flightless Goonie
 * Flopsy Fish
 * Flutter
 * Fly Guy
 * Frog Pirate*
 * Fuzzy*
 * Gargantua Blargg
 * Georgette Jelly*
 * Goomba
 * Goonie
 * Green Glove
 * Grim Leecher*
 * Grinder
 * Grunt*
 * Gusty
 * Harry Hedgehog
 * Hootie the Blue Fish*
 * Hot Lips
 * Incoming Chomp
 * Jean de Fillet*
 * Kaboomba
 * Kamek
 * Koopa Troopa
 * Lakitu
 * Lantern Ghost
 * Large Milde
 * Lava Bubble
 * Lava Drop
 * Lemon Drop*
 * Little Mouser
 * Little Skull Mouser*
 * Loch Nestor*
 * Lunge Fish
 * Mace Guy
 * Melon Bug*
 * Milde
 * Mini-Raven*
 * Mock Up*
 * Mufti Guy
 * Naval Bud
 * Needlenose
 * Nep-Enut
 * Nipper Plant
 * Nipper Spores
 * Paratroopa
 * Piro Dangle
 * Piscatory Pete
 * Potted Spiked Fun Guy*
 * Preying Mantas*
 * Raven
 * Coin Bandit*
 * Rip Van Fish
 * Seedy Sally
 * Shark Chomp
 * Short Fuse
 * Skeleton Goonie
 * Slugger
 * Sluggy*
 * Spear Guy
 * Spike (creature)
 * Spike (obstacle)
 * Spiked Fun Guy
 * Spooky*
 * Spray Fish
 * Stilt Guy
 * Stretch
 * Tap-Tap
 * Tap-Tap the Golden*
 * Thunder Lakitu*
 * Toady
 * Train Bandit*
 * Very Goonie*
 * Wall Lakitu
 * Whirly Fly Guy*
 * Wild Ptooie Piranha
 * Woozy Guy
 * Zeus Guy*

Bosses
Each world has two castles each with a boss at the end. Every boss is just a larger version of a basic enemy that Kamek has super-sized with his magic, with the exception of Prince Froggy, who is normal sized. (see Prince Froggy for more info)

World 1
 * Burt the Bashful (Fort)
 * Salvo the Slime (Castle)

World 2
 * Bigger Boo (Fort)
 * Roger the Potted Ghost (Castle)

World 3
 * Prince Froggy (Fort)
 * Naval Piranha (Castle)

World 4
 * Marching Milde (Fort)
 * Hookbill the Koopa (Castle)

World 5
 * Sluggy the Unshaven (Fort)
 * Raphael the Raven (Castle)

World 6
 * Tap-Tap the Red Nose (Fort)
 * Tap-Tap the Golden (Castle, Door 3)
 * Baby Bowser (Castle)
 * He is then transformed into a giant Baby Bowser by Kamek for the true final boss battle.

Trivia

 * In the Super Mario-Kun adaptation of this game, Adult Mario and Adult Luigi go to the past with  Adult Bowser by mistake. They stop Kamek from kidnapping Baby Mario and help Yoshi reunite the Baby Bros. But, in the Donkey Kong Country adaptation of Super Mario-kun, is revealed Yoshi does not remember anything about any Adults here and nothing about the Baby Mario tantrums.