Yoshi's Island (Super Smash Bros.)
From the Super Mario Wiki
Yoshi's Island is a stage in Super Smash Bros., and is heavily modeled after Yoshi's Story. It consists of a big platform with the Super Happy Tree in the background, three other smaller floating platforms above, and three clouds at the edges of the stage, which vanish when a character stood on them too long. For unknown reasons, there is a very slight height difference on the top platform of the stage. This particular stage reappeared in Super Smash Bros. Melee, as an enhanced remake. Another stage titled Yoshi's Island also appears in Super Smash Bros. Brawl, but its design is instead based off Yoshi's Island DS.