The Chaos Emeralds have been at the center of just about every Sonic The Hedgehog game, and they've made their big-screen debut in the second Sonic movie. They're clearly of vital importance to the setting, where the race to collect and control the Chaos Emeralds has ramifications felt the world over.
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What are these powerful jewels, and why are they sought so desperately by villains like Eggman? The Sonic games aren't necessarily known for their narrative, but the Chaos Emeralds have a history that stretches back thousands of years. Let's take a deeper look at these mysterious MacGuffins.
The seven Chaos Emeralds are able to generate tremendous amounts of energy, effectively making them a source of unlimited power. The Emeralds become even stronger when in proximity to one another, and having all seven in one place can create miraculous effects. In particular, gathering all the Chaos Emeralds allows the bearer to temporarily gain incredible abilities, an effect most often used by Sonic himself when he transforms into Super Sonic. Shadow is also notable in his power to use the Chaos Emeralds, manipulating time and space via Chaos Control.
Despite their name, the Chaos Emeralds each have a different vibrant color. There is no known difference in power between the different colored Emeralds. The Chaos Emeralds are blue, green, red, purple, yellow, turquoise, and white. A Chaos Emerald that has been drained of power (a state which is always temporary) appears grey,
In Sonic Adventure 2, Tails is able to create an artificial Chaos Emerald that has a more subdued hue than the genuine article. While it is less powerful than the real thing, the false Emerald still functions
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