Crystals are items in Bomberman World.
They are crystals that are scattered in the first four worlds that are collected to imprison Earth Bomber, Cyclone Bomber, Fire Bomber and Aqua Bomber in order to stop Bagura.
Each stage requires a certain amount of crystals the player has to collect in order to open the exit. Some crystals are protected by a Core Mecha, and defeating a mini-boss also make them drop 1 crystal. Each crystal collected is worth 400 points.