The Precioustone keeps Maginaryworld under control while residing in the Temple of Light. The Precioustone is shattered by Void, which causes Maginaryworld to fall into disaster. The many dream worlds that were created were starting to change, as they are encased in the dark magic that the Precioustone could not stop anymore. After being brought to the world by Lumina Flowlight, Sonic and friends then set out on a quest to find all the pieces of the Precioustone and repair it. Dr. Eggman also followed Sonic to Maginaryworld since he learned of the power of the Precioustone, but rather than playing the role as the villain he is slightly helpful at times or causes minor havoc for the players as a way for punishing them for not doing well on the board. Eventually, the heroes repair the stone and leave Maginaryworld.
- Like the Time Stones, the Prescioustone is one of the few mystical items that so far do not give Sonic nor his friends a transformation.
- In the Archie Comics Sonic the Hedgehog version, it was given the name the Master Precioustone, and the pieces it broken into simply called Precioustones, as given in The Complete Sonic Comic Encyclopedia.
|Characters||Sonic (Super Sonic) | Tails | Knuckles | Amy| Gamma | Big | Chao | Dr. Eggman* | Lumina Flowlight* | Illumina* | Void* | NiGHTS*|
|Boards||Emerald Coast | Fire Bird | Fourth Dimension Space | Nature Zone | Riot Train|
|Techniques/Moves||Spin Dash | Propeller Flying | Climb | Hammer Jump | Hover | Light Speed Dash | Light Speed Attack | Rapid Tails Attack | Maximum Heat Knuckles Attack | Spin Hammer Attack | Laser Blaster | Lock-On Missile | Power Rod | Lullaby|
|Other|| Forcejewels | Magical Cards | Maginaryworld | Precioustone | Temple of Light