World Ring



The World Rings (世界リング Sekai Ringu) appear in Sonic and the Secret Rings. There are 7 in total, sharing similar traits with the Chaos Emeralds, mainly the ability to use their power to perform a super-transformation, shown by Erazor Djinn and Sonic the Hedgehog. It was stated that the collector of the rings must sacrifice their life for control of their power.

Colors
The Seven World Rings come in the same colors as the Chaos Emeralds. Each one represents a human emotion. While Erazor Djinn uses all seven rings to transform, Sonic required only the red, purple, and green to become Darkspine Sonic. This form is similar to Super Sonic in power, except Darkspine Sonic is not invincible, and his power isn't reliant on Ring energy. Darkspine Sonic also seems more violent that Super Sonic, relying more on his fists and feet than anything else, which is understandable due to it being a negative energy transformation.
 * White = Wishes
 * Red = Rage
 * Yellow = Joy
 * Green = Hatred
 * Blue = Prayers
 * Purple = Sadness
 * Cyan = Pleasure

Abilities
When all the World Rings are collected, it is conceivable that they could produce results as catastrophic as the Chaos Emeralds can. Sonic fears their energy could open the gates of Hell.

The World Rings don't appear to be as strong in terms of power as the Chaos Emeralds; however, because of the emotions they contain in such strong quantities, if all 7 World Rings were absorbed by someone other than Erazor, it can be assumed that they would either die because of all the emotion and power raging inside them, or go insane. The latter seems more likely, reinforced by both Sonic and Erazor's transformations; both became more violent and aggressive than before, and Sonic had only absorbed three.

Trivia

 * It is possible that, just like the Chaos Emeralds, the rings respond to emotion. As seen when the rings of anger, hatred, and sadness burst out of Alf-Layla-wa-Layla and were absorbed into Sonic since that's what he was feeling when Erazor killed Shahra.
 * In Sonic and the Black Knight, there are unlockable stages called Legacy stages. If the stage is finished, there is a possible chance to buy one of the world rings with enough ID points. If all seven world rings are collected, Crush 40's version of "Seven Rings in Hand" will be available in Gallery Mode to listen to.