Chaos Drive


 * For the Experience increasing gems in Sonic Unleashed, see Chaos Orbs.

Chaos Drives (カオスドライブ) are crystallized Chaos Energy that are usually contained in devices. They seem to be a power source for robots. The Chaos Drives were initially designed by Professor Gerald Robotnik as a means of transferring energy to living tissue, as part of his work on Project Shadow.

Sonic Adventure 2
Chaos Drives first appear in Sonic Adventure 2 as power source for GUN Robots much like animals are used for Eggman's robots. Collected and used with Chao at Chao Gardens, they enhance a Chao's specific skills:

With the right combination of animals, color of Chaos Drives and depending on who is raising the specific Chao can alter the outcome of the Chao to appear similar to a character.

Sonic the Hedgehog (2006)
They appear once again in Sonic the Hedgehog (2006) along with Light Cores which replenish a bit of energy to the Action Gauge while Chaos Drives restore the most. Incidentally, Chaos Drives also appear as a Power Up on item boxes. Once the item box is busted it will fully restore the Action Gauge. Unlike in Sonic Adventure 2, where Chaos Drives slowly fall to the ground for characters to pick up, Light Cores and Chaos Drives home into you the moment the robots are destroyed. They are not used for raising Chao, as Chao gardens are not in this game.