- "Zone of Silence" redirects here; you may be looking for the Zone that was merged with it to create the Special Zone in the original continuity, The Void.
A King's Prison
When King Acorn's royal adviser, Dr. Eggman, betrayed him and took over Mobotropolis, the dictator banished the overthrown King into the Special Zone along with the royal wizard, Naugus. The Knothole Freedom Fighters later managed to rescue King Acorn from the zone after taking back Mobotropolis. (FCBD: #8)
The Special Zone is evidently a mystical dimension that is difficult to escape, as even Naugus proved unable to break free from it with his magic.
- The Special Zone originates from various Sonic videogames, which could be played between zones and, if cleared, would award the player with a Chaos Emerald.