From Sonic Retro
|Eighth level, Sonic Advance|
|Number of Acts: 1|
|Level theme: Death Egg|
|Boss: Egg X|
| Non-English names:
|← Cosmic Angel Zone | The Moon Zone →|
X-Zone is the final stage is Sonic Advance. Set on some kind of orbital platform high above Sonic's world, the Zone is much like the original Death Egg Zone in that it is composed of a series of boss fights. Eggman returns with some of his most familiar boss machines:
- Egg Mobile: Hammer Ball-shiyou (エッグモービル・ハンマーボール仕様), also known as Egg Mobile-H. A return of the Green Hill Zone boss from Sonic the Hedgehog (16-bit).
- Egg Mobile: Drill Machine-shiyou (エッグモービル・ドリルマシン仕様), also known as Egg Mobile-D. A return of the Drill Eggman boss from Emerald Hill Zone from Sonic the Hedgehog 2 (16-bit).
- A new boss as the third opponent: the Egg X.
The first two bosses are weaker than their original versions, requiring only four hits to destroy, regardless of the difficulty mode. The Egg X is somewhat more challenging. By having all the seven Chaos Emeralds and then beating this level as Sonic, you can unlock true last boss in The Moon Zone.