The Spring Ball (スプリングボール Supuringu Bōru) (also known as the Jump Ball) is an item that allows Samus Aran to jump in Morph Ball form, thus invalidating the Bomb Jumps as a mode of quick locomotion. It first appeared in Metroid II: Return of Samus, and has appeared in all games since, except for the GameCube versions of Metroid Prime and Metroid Prime 2: Echoes.