Cool Edge (クール・エッジ Kūru Ejji?) is the third or fourth Action Stage on the PlayStation 3/Xbox 360 version of Sonic Unleashed, and the second or third Stage on the PlayStation 2/Wii version of Sonic Unleashed (depending on the order of previous stages). The area takes place on the North Pole of Sonic's world, with fields of frozen ice and icebergs floating in open waters. It is located outside of Holoska. During the events of the game, Sonic the Hedgehog and Chip came here to search for the keys to unlock the local Gaia Temple.