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Sonic Adventure
Final Egg (Sonic)

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Sonic Adventure
Final Egg (Amy)

Sonic Adventure
Final Egg (Gamma)

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This must be Robotnik's base.

Sonic the Hedgehog, Sonic Adventure

Final Egg (ファイナルエッグ Fainaru Eggu?) is an Action Stage that appears in Sonic Adventure, Sonic Adventure DX: Director's Cut, and the 2010 remaster of the game. It is the tenth and final Action Stage as Sonic, the third and final Action Stage as Amy, and the first Action Stage as Gamma. Final Egg is Dr. Eggman's secret base of operations in the Mystic Ruins. As with most other Action Stages in its games, Final Egg has different level designs for each character, which have three optional missions each.


Final Egg as seen from outside, from Sonic Adventure DX: Director's Cut.

Final Egg is a massive base built by Dr. Eggman. It can be acceded from the Mystic Ruins Jungle Area. From the outside, it looks like a tall, massive, silver cylinder with a yellow circle that has the Eggman Empire symbol on it. This cylinder stands on top of a giant, disc-shaped metropolis that is glowing red and has many yellow lights illuminating the sky above. To enter Final Egg, there is a long bridge that extends from the base itself to an area near the ancient ruins.

When the playable character has entered Final Egg, they will find themself inside a giant, spherical, double-story room with some machinery, including some tubes where Metal Sonic and an unnamed Sonic robot are stored, and the machine in which E-102 Gamma was awaken for the first time. To enter the Action Stage itself as Sonic and Amy, the player has to open a door with three yellow switches on the sides, with six in total. When the player presses a switch, others will either activate or deactivate, similar to the Lights Out video game. To open the door, all six switches must be activated. With Gamma on the other hand, the player has to simply enter a standard door that is automatically opened when the robot approaches it.

The inside of the Final Egg itself has an inconsistant look, though it is overall a dark, massive base with lots of machinery. In most sections in particular, the walls consist of metallic plaques with some chain link-patterned fences that allow the player to see the outside, which is just a pitch-black background. Platforms here are yellow with small fences on the sides and a metallic grill on the center.

According to Sonic, Final Egg "smells like oil".[1]


Sonic the Hedgehog

After exiting Lost World, Sonic sees Dr. Eggman run to Final Egg. He thus gives chase to him in the base. The hedgehog eventually encounters the doctor piloting his Egg Viper. In the end though, Sonic manages to destroy the Viper.

Amy Rose

Whilst trying to find Birdie's parents, Amy and Birdie both infiltrate Final Egg. There, they have to flee from ZERO, who is still hot on their trails. Though they manage to barely escape from the base in one piece, they find no trace of Birdie's parents. Amy thus decides to keep looking.

E-102 Gamma

Final Egg in particular would be where Dr. Robotnik awakened E-102 Gamma. After having him practice in the base's shooting range, the doctor makes Gamma fight his older "brother", E-101 Beta.



Sonic the Hedgehog

Level Mission

Amy Rose

Level Mission

E-102 Gamma

Level Mission


In other media


Sonic X

Main article: Final Egg (Sonic X)

The Final Egg, from "Revenge of the Robot".

In the anime series Sonic X, the Final Egg was Dr. Eggman's hidden base in the Mystic Ruins. After the Egg Carrier's crash and an unsuccessful attempt to destroy Station Square, Eggman returned to the Final Egg to devise a new strategy. Sonic, however, follows Eggman to the Final Egg. There, Sonic destroyed the gate leading into the Final Egg. After then avoiding numerous traps set by Eggman, Sonic reached the center of the Final Egg. There, he fought the Egg Viper, eventually defeating Eggman and destroying the Final Egg.

Books and comics

Archie Comics

Main article: Final Egg (Archie)

In the Sonic the Hedgehog comic book series and its spin-offs published by Archie Comics, the Final Egg was a base of the Egg Carrier and Dr. Eggman's operations when he tried to use Chaos. Later on however, the base was abandoned.

IDW Publishing

Main article: Final Egg (IDW)

The Final Egg, from Sonic the Hedgehog #11.

In the Sonic the Hedgehog comic series and its spin-offs published by IDW Publishing, the Final Egg is one of Dr. Eggman's bases. Its past is virtually identical to its game counterpart's, up until after the events of Sonic Forces. This one in particular was used by Dr. Starline, who had Rough and Tumble bring an amnesiac Eggman here in order to restore his memories. After recovering, Eggman prepared the Metal Virus in the Final Egg lab, but later transferred his operations to the Faceship.


  • Near the end of the level, there is a particularly slow-moving platform which leads to four extra lives. This was most likely intended as preparation for the battle with the Egg Viper within the level itself. In the final game, the battle was split from the level (so progress is saved), so the extra lives are unnecessary. However, they were possibly left there for the player to discover.
  • Beyond the capsule, there is an unused tunnel that is blocked off, but it can be accessed using the Light Speed Dash. It was intended to trigger the cutscene for the Egg Viper battle within the level itself. However, in the final game, the battle was split from the level. As a result, a capsule was implemented and the area was sealed off, probably due to the difficulty of the level.
  • An unfinished duck Badnik was intended for this level, but completely removed in the final game. It can be found in pre-release copies, where it shoots at the player and attempts to run away.
  • Final Egg is nowhere to be seen when using characters that do not go into it. The only notable exception is Knuckles, who can see the base from the Mystic Ruins Jungle Area, but cannot enter it.
  • In an scrapped cutscene, in Final Egg, Dr. Robotnik scolds Gamma for him disappointing the doctor, before reluctantly giving him a second chance. Apparently, this cutscene would have played if the player failed to complete Final Egg as Gamma. Oddly, despite being scrapped, it was still dubbed into English.

A "Pokéball" on the screen.

  • Blue screens with the Eggman symbol show flickering images of what looks like a Pokéball from the Pokémon series.
  • At the start of Sonic's version of the Final Egg on the Dreamcast, there is a hovering, offline Egg Keeper that activates once the player gets near it. This Egg Keeper was removed from the Action Stage in Sonic Adventure DX: Director's Cut, but returned in the 2010 remaster of the game.
  • This is the only Action Stage in Sonic Adventure that reuses a theme first heard in an Adventure Field, as the area leading into Final Egg plays the same music ("Mechanical Resonance ...for Final Egg") and one of only two Action Stages that use a single theme in more than one section in the same Action Stage, being the theme for the first and third sections as Sonic (the other being Sky Deck using "Skydeck A Go Go! ...for Sky Deck" in the first and second sections as Sonic).


Name Artist(s) Length Music track
"Mechanical Resonance ...for Final Egg" Kenichi Tokoi 3:05
"Crank the Heat Up!! ...for Final Egg" Jun Senoue 3:00



Sonic Adventure DX (GC) Sonic - Final Egg Missions Level B and A


Sonic Adventure DX (GC) Amy Final Egg Missions Level B and A


Sonic Adventure DX (GC) E-102 Final Egg Missions Level B and A



  1. Sonic Team (23 December 1998). Sonic Adventure. Dreamcast. Sega. Area/Level: Final Egg. "Sonic: I smell oil."

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