The Firework Flurry takes the form of a blue, staff-shaped Roman candle with a yellow rim and yellow five-pointed stars on it. When used, it lets out projectiles are that either red, yellow, or blue in color.
In gameplay, the Firework Flurry can only be obtained at random from Item Boxes by Lantern Silver. As with most other Items, Metal Sonic can also use the Firework Flurry if he uses the Steal Item to steal it from the aforementioned user.
When obtained, the Firework Flurry will grant the player up to three glowing shots that will fly down the lane they were deployed on at high speed when used. However, the shots will dissipate when they hit a player, collide with an obstacle, or travel off course. The shots come in three colors (blue, red and yellow), but the color the shots will assume is picked at random. In addition, the differently-colored shots will have different effects on the character they hit:
Red: Opponents hit by the red shot will be slowed down heavily and take damage.
Yellow: Opponents hit by the yellow shot will be temporarily stunned and take damage.
Blue: Opponents hit by the blue shot will be frozen and take damage. Frozen opponents are unable to jump, slide, use their items or change path. This effect will last for a short amount of time or until the player gets hit by an obstacle or falls into a bottomless pit.
In addition, when a character is upgraded to level 6 and 12, the Firework Flurry will inflict greater damage.