Explosion (power-up)

Speed Down is an Item Box power-up that appears in Sonic Riders and Sonic Riders: Zero Gravity. When obtained, it shoots a bomb that can attack opponents.

Description
In gameplay, when the player obtains Explosion, a bomb forms in front of the player and starts rolling along the track. If the bomb makes contact with the player's opponent(s), he/she will take damage in the form of losing some of their Rings and come to a sudden stop, giving the player the opportunity to catch up to the hit opponent. After some time, the bomb will explode and any opponent(s) that are caught in its blast will also take damage.

The player can obtain Explosion at random by touching one of the Item Boxes that lie scattered across the racing course. When obtaining it, a small rounded cube icon depicting a black bomb appears briefly on-screen.