Crystals are enemies in Kid Chameleon.
Big giant spinning gems looking like tempting huge diamonds — pity they are really too big to be collected.
Crystals come in three colors: amethyst purple, emerald green and opal orange. They take two hits minimum.
Crystals just rotate while moving along a given plane; they turn around on reaching an obstacle or a step. They do not attack. They are often used as decoration for level design, with no harmful intention.