Yoshi's Island (SSBM)
Announced at E3 2001, Yoshi's Island (ヨースター島, Yoster Island) is a starter stage in Super Smash Bros. Melee, also available as a Melee Stage in Super Smash Bros. Brawl and a Familiar Stage in Super Smash Bros. for Wii U and Super Smash Bros. Ultimate.
In Ultimate, it is renamed Yoshi's Island (Melee) to distinguish it from the similarly named Brawl stage.
On the far right of the stage there is a hill sloping upwards which reaches the right blast line. On the left there is a large, oblique Warp Pipe supported by two smaller ones. Between them there is a flat stretch of land at whose center there is a pit covered by three Rotating Blocks. Six more blocks float over the stage in two blocks of three.
If characters attack a block or jumps into it from below, the block starts spinning and can be passed through, becoming solid again after a short while. This can cause fighters to get trapped in the pit in the middle with little chances of recovery, especially in Ness's case.
In Brawl, playing as Fox, Falco, or Wolf and activating the Landmaster Final Smash when at least one of the three Turning Blocks in the middle rotates causes the Landmaster to fall through the resulting hole, causing a Self-destruct, despite the fact that the Landmaster is much bigger than the opening. This is because of a game physic in which the actual character is still on the field and the characters cannot stand in midair. The Pokémon Trainer also occasionally moves above the hole, even though there is clearly nothing under him.
Ω forms and Battlefield form
In Super Smash Bros. for Wii U, the Ω form only contains a flat grassy platform that extends below the blast line. The Banzai Bill and Fishin' Lakitu sprites can still appear in the background. The blocks, pipes, and the walk-off are removed.
In Super Smash Bros. Ultimate, the Ω form and Battlefield form are suspended in the air with the main platform no longer extending below the blast line. The main platform is a completely flat version of the grassy ground of the regular form that is resized and reshaped to match Final Destination and Battlefield, respectively. The three soft platforms of the Battlefield form are made of yellow blocks that are unique to this form.
With hazards off in Ultimate, the Rotating Blocks do not have a hurtbox, making it impossible to pass through them or fall into the center pit.
Rotating Blocks are Super Mario World's replacement of the usual Brick Blocks seen in Mario games. If hit from underneath, with a throwable object, or with a cape spin, they start spinning and allow Mario to pass through them, returning solid after a short while. However, they can also be destroyed with a Spin Jump.
The trees in the background carry Berries, which Yoshis can eat in Super Mario World and later games. Also in the background are two enemies from Super Mario World in their original designs: Banzai Bill and Fishin' Lakitu with a 1-Up Mushroom.
In all games in which it appears, Yoshi's Island is universally banned in competitive play due to its overall layout being detrimental in a serious setting, as well as the advantages it gives to already powerful characters in certain situations.
In all cases, the close blast zones and the walk off blast line to the right of the stage can easily cause quick KOs; the frequent absence of a bottom blast line also marginalizes edgeguarding skills. The rotating blocks interfere significantly by extending and blocking hitboxes, and they can be used as a cave of life.
Super Smash Bros. Melee
Super Smash Bros. Brawl
Super Smash Bros. for Wii U
Super Smash Bros. Ultimate