|Features in||Sonic the Hedgehog Chaos|
|Preceded by||Turquoise Hill Zone|
|Proceeded by||Sleeping Egg Zone|
The Gigalopolis Zone, known as Gigapolis Zone in the Game Gear versions, is the second zone in Sonic the Hedgehog Chaos and is styled as a high rising cityscape at night. The level can reach incredibly high so that the city below can no longer be seen and there are also areas under construction. The design is reminiscent of that of the Star Light Zone and there are long tube tunnels connecting various floors and levels together.
 Boss Fight
- Dangerous Ball Tower - Full article
The boss in this level is the Dangerous Ball Tower, a tall tower constructed of detaching balls.