Sonic the Hedgehog: Return of Robotnik

Sonic the Hedgehog: Return of Robotnik is a game idea by me, aka SpongeBobsTikiLand or SBTL, with this idea being continuation of Sonic 3 & Knuckles, taking place after that game’s events.
== Plot ==
After the original Death Egg’s defeat, the evil Dr. Ivo “Eggman” Robotnik creates the Death Egg mk.II and sends it to space. Sonic and company hear of Eggman’s plan and must stop him once again. 
However, before Sonic heard of this, Eggman messed up the SEGA wormhole trying to use the power of the Phantom Ruby, which put even more heroes against the doctor.
== Playable characters ==
* Sonic The Hedgehog 
* Miles “Tails” Prower
* Knuckles the Echidna
* Amy Rose (unlockable)
* Metal Sonic (unlockable)
* VectorMan (unlockable)
* ToeJam & Earl (unlockable)
* Dynamite Headdy (unlockable)
* Ristar (unlockable)
== Controls ==
== Zones ==
* Industrial Hill - A mechanized Green Hill.
* Roller Ride - A joyride on a rollercoaster.
* Sand Slider - The ancient tombs of Egypt.
* Crystal Cove - An abandoned mining factory.
* Robotropolis - Eggman’s mechanized city.
* Wing Fortress mk.II - Eggman’s flying fortress.
* Egg Base - Eggman’s base. Badniks are produced here.
* Penultimate Showdown (All Chaos Emeralds Only) - A gigantic showdown against Eggman.
* Improbable Insanity (All Super Emeralds Only) - The true finale. Fight Eggman and destroy the Death Egg once and for all.
== Bosses ==
* Egg Wrecker mk.III
* Egg Coaster
* Egg Golem mk.III
* Chase Mobile
* Egg Roadster
* Metal Sonic
* Egg Amalgamation 
* Egg Dasher
* Phantom Big Egg Robot
== Stories ==
Sonic, Tails, Knuckles, and Amy: The core story. Journey through 7 Zones to stop the evil Dr. Robotnik.
ToeJam / Earl: After cruising through the galaxy, their ship randomly breaks down and they must crash to the nearest planet, Mobius. Their ship pieces are scattered around the Zones.
Metal Sonic: After his defeat on Wing Fortress mk.II, Metal seeks revenge on our heroes. Traverse through Flying Fort to reach Industrial Hill.
Dynamite Headdy, Ristar, and VMan: After ending up in Sonic’s world, they must defeat the doctor to get the Phantom Ruby and return to their home universes.