Sonic the Hedgehog: Back to the Underground

== Premise ==
In an epic conclusion to Sonic Underground, Sonic and his siblings, Sonia and Manic, go on an adventure to collect the Chaos Emeralds, alongside the Royal Seal of Mobius, to stop Dr. Robotnik in order to reunite with their mother, Queen Aleena.
== Characters ==
=== Playable characters ===
* Sonic the Hedgehog
* Sonia the Hedgehog
* Manic the Hedgehog
=== Non-playable characters ===
* The Oracle of Delphius
* Cyrus the Lion
* Trevor the Mouse
* Bartleby Montclair
* Queen Aleena Hedgehog
* Mayor Whinnyham
* Knuckles the Echidna
* Athair the Echidna
* Chomps the Dinosaur
* Hothep the Dog
* Aman-Rapi
* Charles Hedgehog
* Lady Windermere
* Farrel the Bug
* Hip Hedgehog
* Luke Periwinkle
* Bellok the Bat
* Hooter the Owl
* Sleet and Dingo
* Alternate Universe Sonic
* Alternate Universe Sonia
* Alternate Universe Manic
* Alternate Universe Robotnik
* Original universe Sonic
* Original universe Miles "Tails" Prower
* Original universe Knuckles
* Original universe Amy Rose
* Original universe Charles Hedgehog
=== Enemies ===
* Swatbots
* Flybots
* Speedbots
* Surveillance Bots
* Death Pods
* Floating Yellow Robot
=== Bosses ===
* Roboticized Charles Hedgehog
* Stealth Bot
* Doo-Bot
* Karlek
* Dingo as a hedgehog
* Guardian Bot
* Grotty Robotnik
* Dr. Ivo "Eggman" Robotnik
** Mega Robotnik
== Items ==
* Power rings
* Chili dogs
* Chaos Emeralds
* Royal Seal of Mobius
== Weapons ==
* Sonic's guitar/medallion
* Sonia's keyboard/medallion
* Manic's drumset/medallion
== Production music covers ==
* Sonic Underground theme song [Title card]
* Someday (from "Beginnings") [Grassy Hill Zone levels]
* Sonic the Hedgehog 4 Boss Phase 1 Theme [Boss levels]
* I Found My Home (from "Mobodoon") [Mobodoon Zone levels]
* Teach the Children, Light the Way (from "Tangled Webs") [Floating Island Zone levels]
* Knuckles' Theme 
* Let's Do It to It (from "A Hedgehog's Home is Her Castle") [Worst Castle Zone levels]
* Mummy Wrap (from "Mummy Dearest") [Hamarapi Zone levels]
* The Cosmic Dance (from "The Jewel in the Crown") [Canyonopolis Zone levels]
* Justice Calling (from "Bartleby the Prisoner") [Ruined Ruby Mine Zone levels]
* We're the Sonic Underground (from "Healer") [Robotropolis Zone levels]
* Don't Let Your Guard Down (from "Virtual Danger") [Final boss level]
* Sonic Underground ending theme [End credits]
== Levels ==
=== Grassy Hill Zone ===
=== Mobodoon Zone ===
=== Floating Island Zone ===
=== Worst Castle Zone ===
=== Hamarapi Zone ===
=== Canyonopolis Zone ===
=== Ruined Ruby Mine Zone ===
=== Robotropolis Zone ===
== Trivia ==
* This is the first video game to be based on Sonic Underground. (Not counting on the 2000 game adaptation, which is an LCD game)
* Not counting on an unreleased Sonic Underground epilogue planned for Sonic Universe Issue #50 by Archie Comics, as the game ends upon finding Queen Aleena, this ironically marks the second piece of Sonic Underground media where the Sonic Underground's vow to find and reunite with their mother was fulfilled to an extent, as they are never seen finding her in the actual show due to its cancellation, first being a Sonic Underground LCD game.
* This marks the first appearance of the scrapped character, Grotty Robotnik. (who is Dr. Robotnik's thin twin brother) 
Category:Sonic the Hedgehog
Category:Sega
Category:Video Games