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Sonic the Hedgehog (1991)
Final Zone

Final Zone is the seventh and last Zone in the original 16-bit version of Sonic the Hedgehog. Final Zone is the shortest zone in the game, as it only features the final boss of the game, while having the final fight against Dr. Robotnik inside his private laboratory.

Sonic must defeat Robotnik without getting hit, as there are no Rings to protect Sonic, which makes it one of the toughest bosses in the game. When the player starts at the beginning of the Final Zone, they will have to to move towards the final room to start the final battle against Dr. Robotnik, who uses four engine pistons to defend himself and crush the hedgehog.


Boss guide

When Sonic enters the laboratory room, Dr. Robotnik attacks him by using four large engine pistons. These pistons are able to easily crush Sonic against the ceiling or floor.

Every time two of four pistons come out; one decoy, and one with Dr. Robotnik laughing inside of it. Sonic must attack the piston with Dr. Robotnik in it. Each time the pistons move, Sonic is able to attack Dr. Robotnik once. However, the player has to be careful depending which pistons will come out attempting to crush Sonic. Also, between each piston cycles, there is a small electric generator creating four spark balls that descend from the ceiling towards Sonic, who must dodge them. When the generator is creating and aiming these spark balls, the player has to choose a place to stay to avoid them. Due to the absence of rings, touching a spark ball results in instantly losing a life. The player can target them to the center of room and then do a Spin Jump to dodge them completely or can stay at one far side of the room and move to the other as the spark balls are fired. After this, another two pistons will appear, and the battle keeps repeating the pattern.

Like every other boss in the game, Sonic must hit Dr. Robotnik eight times to finish off the doctor for good. After landing all eight hits, the pistons start exploding and Dr. Robotnik escapes from the room. Sonic must follow him, as Dr. Robotnik hops into his Egg Mobile and starts flying away. During this time, the player has two choices although it does not affect the outcome of the game; either the player can let Sonic jump and finish off the Egg Mobile causing it to explode and slowly fall down into the bottomless pit at the end of the zone or the player can also simply let Dr. Robotnik go.

After clearing the Final Zone, the game progresses to the ending sequence and credits. The ending sequence differs based on whether or not Sonic has collected all of the Chaos Emeralds from the Special Stages.

In other media

Sonic X (comic series)

Eggman welcomes Sonic and the gang to the Final Zone in Sonic X #11.

The Final Zone (mistakenly told to be Final Stage) is briefly featured in Archie Comics's Sonic X #11. After Sonic saved Cream, Cheese and Vanilla from the glass box, Cheese pressed the switch, that transported the whole gang to the Final Zone, where Eggman is in one of pistons was waiting for them.

When the gang start to finish in-game Eggman and his pistons, Eggman outside of the video game had almost gotten enough points to launch Sonic and his friends to the moon, who actually were trapped inside of the tower base. At the same time, Chris and Chuck managed to release Sonic and friends from the game (powered by Master Emerald) before the base tower got destroyed.

Archie Comics

Final Zone, from Sonic the Hedgehog #227.

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Final Zone is a location that appeared on Mobius during Operation: Clean Sweep. There, Sonic and his allies made their first decisive victory over Dr. Eggman in that reality.

After the events of Worlds Collide, the Final Zone became a permanent part of Sonic's World with a history nearly identical to its game counterpart.


The original Level Select showing that Final Zone was not listed.

  • Final Zone was originally conceived of not as a single zone, but rather as full stage-length Act 3 of the Scrap Brain Zone.
  • In the 2013 re-release of original Sonic the Hedgehog, Final Zone has only slight changes in normal in-game, as the doorway, where the player comes to the room, will be closed for the battle, as the tube at the other side of room will be solid until it breaks off after defeating the final boss. These changes have been made due to the widescreen feature of the re-release.
  • If Sonic delivers the final hit to the boss and hits twice instead (with the right timing), a glitch will happen which indicates that the boss needs to be hit another 255 times, caused by underflowing the hit point counter for the boss.
    • After defeating the boss, a glitch may happen that causes Sonic to jump into a bottomless pit, thus losing a life.
  • In Sonic Mania, this fight is referenced in Metallic Madness Zone with the Egg Pistons mk.II mini-boss, which has five pistons instead of four.





Name Artist(s) Length Music Track
Final Zone Masato Nakamura 1:16