Yoshi's Island

Yoshi's Island is a large, tropical and mountainous island inhabited by Yoshis. It first debuted in Super Mario World in 1991, in the same game Yoshi entered the gaming series. During the evens of Super Mario World, Bowser and his children attacked the Yoshi's home, forcing Mario to team up with the natives to stop the Koopa army.

Super Mario World 2
In Super Mario World 2: Yoshi's Island Yoshi guided Mario through Yoshi's Island as a baby.

In Super Smash Bros.
Yoshi's Island appeared as a stage in Super Smash Bros.