[[File:HeartOfTheWorld.jpg|thumb|320px|right|The Heart of the World, as seen in a chamber with [[the Fairy Council]] in ''[[Rayman 3: Hoodlum Havoc|Rayman 3]]'']]
'''The Heart of the World''' (also known as '''the Primordial Core''') is a mystical object mentioned in ''[[Rayman 2: The Great Escape]]'', though it is not shown until ''[[Rayman 3: Hoodlum Havoc]]''. Comprising one thousand [[Yellow Lum]]s, the Heart is a glowing conglomeration of light whose energy sustains the harmony and balance of [[the Glade of Dreams]]. It was guarded by [[
The First Grand Minimus]], but he retired because of his old age or possible death.
At the beginning of ''[[Rayman 2: The Great Escape|Rayman 2]]'', the Heart of the World is destroyed by the [[Robo-Pirate]]s and their leader, [[Admiral Razorbeard]]. The 1000 [[Yellow Lum]]s which formed the Heart (only 800 in the PlayStation version) are scattered about [[the Glade of Dreams]]. This cataclysmic event destroys the natural order, plunging the world into chaos and robbing [[Rayman]] and [[Ly the Fairy|Ly]] of their powers. The shattering of the Heart has serious negative repercussions for the Glade; dangerous creatures such as [[caterpillar]]s, [[spider]]s, [[piranha]]s and [[Zombie Chicken]]s begin to appear and multiply. [[Foutch]], the Guardian of the third [[Four Masks of Polokus|Mask of Polokus]], is driven insane. Over the course of the game, Rayman must gather the 1000 Yellow Lums, ultimately reconstructing the Heart and restoring the world's balance.