The Smash Ball (formerly called a Smash Emblem or Smash Orb by fans) is an item shown to debut in SSBB. It appears to allow the user to activate an especially powerful Final Smash attack. To use the Smash Ball, the characters must attack the Smash Ball until he/she begins to glow. The attack can be unleashed at any time, and can only be used once, after you get the Smash Ball by pressing the B Attack button. However, the Smash Ball can be knocked out if the character with the item is damaged enough. The Smash Ball can move around on its own, making it harder for players to use; it must be attacked by the players until it breaks, and whoever breaks it will be able to use their Final Smash. This should not be confused with a normal item as it grants the user a special attack.
Once the Smash Ball has been broken, the screen will darken and the character that has broken it will begin glowing and their eyes will become yellow. The player can unleash his Final Smash at any time after that, but risks the chance of dropping the Smash Ball if they are attacked.
If no one breaks the Smash Ball after a long enough period of time it flies away :(
In the game, the Smash Ball will be classified as a normal item which can be turned off in the Item Switch.