New Super Mario World 1: New Yoshi's Island

New Super Mario World 1 (or normally called New Yoshi's Island 1) is the first game that kicks off the New Super Mario Series Ver. 2. In-game, there are a total of 27 bosses.

Grasslands
The Grasslands (More commonly called Yoshi's Island) is the first world Yoshi and Mario visit. In this world, he faces the Koopas Bros in the castle, but also faces Kent C. Koopa in the fortress.

Desert
The Desert (or Dry Dry Desert) is the second world Yoshi and Mario find themselves in. Here, they face Tutankoopa and Mummy Chompus.

Swamp
The Swamp (or Mushroom Swamp) is the third world Yoshi and Mario adventure in. Here, they must defeat Tubba Blubba and his heart.

Stronghold
The Stronghold (or Shy Guy Stronghold) is the next world Yoshi and Mario find themselves in. Here, they face General Guy and Big Lanturn Ghost.

Island
The Island (also known as Isle Delfino!) is the fifth world Yoshi and Mario visit. Here, they face Petey Piranha and Lava Piranha.

Sky
The Sky (also known as Mushroom Heights) is the sixth world Yoshi and Mario adventure in. Here, they face Huff N. Puff and Lakithunder.

Tundra
The Tundra (also known as Icy Peak) is the seventh world Mairo and Yoshi visit. Here, they face the Crystal King and Doopliss.

Badlands
The Badlands is the eighth world Yoshi and Mario find themselves in. Here, they face King Bowser and Kamek.

Spirit Dimension
The Spirit Dimension is the final World. Here, Mario and Yoshi face Super Koopa Bros, Mummy Tutankoopa, Macho Tubba Blubba, Big General Guy, Boolossus, Naval Lava Piranha, Thunder Huff. N. Puff, the Crystal Lord, Mad Bowser, King Boo, and Bowrus.