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South Island

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You may also be looking for Southern Island, the home of Marine the Raccoon.
South Island in ending of Sonic the Hedgehog

South Island at the ending of 8-bit version of Sonic the Hedgehog.

South Island is an island featured in the Sonic the Hedgehog series, traditionally recurring in the earlier titles. According to Japanese manuals, it supposedly shifts along the water due to some connection to the Chaos Emeralds.

South Island first appeared in Sonic the Hedgehog for the Sega Mega Drive, and later appeared in Sonic the Hedgehog, Sonic the Hedgehog 2, and Sonic Chaos for the Master System and Game Gear. Its next appearance was in Sonic the Fighters, an arcade game. Following that, it was in Sonic Adventure 2, where a 3D rendition of the Green Hill Zone was a secret, unlockable level. After that, it appeared in Sonic Battle as Emerald Town. Its latest appearance was in Sonic Chronicles: The Dark Brotherhood, where Green Hill Zone was the first area in the game. Sonic Battle revealed that Central City was on the island, and Sonic Chronicles: The Dark Brotherhood revealed it held the Mystic Ruins, as well.

Game appearances

Sonic the Hedgehog (16-bit)

In Sonic the Hedgehog, Sonic goes to the island and finds that the evil Doctor Robotnik built a base on the island and turned the local wildlife into robots. The heroic hedgehog stops Robotnik while collecting the Emeralds. Zones of the game are below:

Sonic the Hedgehog (8-bit)


South Island in 8-bit version of Sonic the Hedgehog.


A close-up map of the island's summit.

The story in the 8-bit Sonic the Hedgehog is the same as in the 16-bit one, and the games most likely depict the same adventure. Zones of the game are below:

Sonic the Hedgehog 2 (8-bit)

In Sonic the Hedgehog 2, Dr. Robotnik returns and kidnaps all the inhabitants, along with Miles "Tails" Prower, demanding a ransom of six Chaos Emeralds to return them. Sonic goes out to stop him once again and succeeds. The Zones of the game are as follows:

  • Under Ground Zone, a volcanic mountain, once used as a mine.
  • Sky High Zone, the top of a mountain that reaches the clouds.
  • Aqua Lake Zone, a lake surrounded by fountains and pillars.
  • Green Hills Zone, very like the one from the previous games, but with normal trees instead of palm trees.
  • Gimmick Mountain Zone, one of Robotnik's metallic bases, apparently set inside a mountain.
  • Scrambled Egg Zone, a mountain filled with large pipes, and another of Robotnik's bases.
  • Crystal Egg Zone, a transparent crystal base of Robotnik's. Can only be accessed with six Chaos Emeralds.

Sonic Chaos

In Sonic Chaos, Robotnik steals one of the Chaos Emeralds on South Island and as a result, the rest of the Emeralds become unbalanced and cause the island to slowly sink into the ocean. However, Sonic recovers all the Emeralds and saves the island. Zones of the game are below:

  • Turquoise Hill Zone, a grassy hillside area, much like Green Hill Zone.
  • Gigalopolis Zone, a sprawling urban area with various passages. The Game Gear version spells it as "Gigapolis Zone".
  • Sleeping Egg Zone, a mostly flat region of plains, with Eggman's self-portrait adorning parts of the background.
  • Mecha Green Hill Zone, Robotnik's version of the Green Hill Zone, with deathtraps strewn everywhere.
  • Aqua Planet Zone, a group of ruins partially submerged in water. Despite the name, there is actually very little water.
  • Electric Egg Zone, another of Robotnik's many large bases.

Sonic the Fighters

Sonicgcps2 003-large

The South Island stage in Sonic the Fighters.

In Sonic the Fighters, South Island is one of the battle arenas. It is the very first arena in story mode, and is where the player character faces Knuckles the Echidna. The arena is set on a small island plateau, in an area that looks mostly like the Green Hill Zone. If the player plays as Knuckles here, the player will fight a shadow Knuckles.

Sonic Blast

In Sonic Blast, Robotnik's latest floating base threatens Sonic's home, so Sonic and Knuckles resolve to take it down. While the location was not specified as South Island in the western storyline, the presence of another version of Green Hill Zone further implies it, and the Japanese instruction manual confirms it. Zones of the game are below:

Sonic Adventure 2

In Sonic Adventure 2 and its GameCube re-release, Sonic Adventure 2: Battle, Green Hill Zone was a secret stage that could be unlocked by obtaining all 180 Emblems. On the Stage Select screen, the icon for Green Hill could be found on a secluded island, presumably South Island.

Sonic Battle

Sonic Battle features Green Hill as an unlockable arena unrelated to Story Mode. In addition, as Central City would later be shown to be located on South Island, it introduces Emerald Town, Holy Summit and Night Babylon as neighboring areas on the island.

Sonic Chronicles: Dark Brotherhood

South Island appears here as the western landmass in the first part of the game. In addition to Green Hill Zone and Central City, it reveals that the Mystic Ruins and the remains of Station Square are also found here.

Sonic Generations

Although South Island itself is not mentioned in Sonic Generations, one of its main locations, Green Hill, makes its reappearance as the first level in this game.

Apperances in other media

Sonic the Comic

In the fortnightly publication Sonic the Comic, South Island is the setting of many stories. Sonic the Comic #25 reveals that South Island is the location of the many "Hill Zones", including not only the Green Hill Zone but the Emerald Hill Zone as well (which, in the games, is located on Westside Island). On the northern part of the island is the Frozen Zone, which contains the North Cave, where Sonic the Hedgehog once hid the Chaos Emeralds.

Sonic the Hedgehog: The Movie

South Island appears in Sonic the Hedgehog: The Movie as part of the Land of the Sky on Planet Freedom and, is ruled by the President. It is also the area where the movie begins.


Sonic the Fighters Soundtrack "South Island ~ Lovers" Knuckles Theme02:47

Sonic the Fighters Soundtrack "South Island ~ Lovers" Knuckles Theme

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