Mushroom Hill Zone: Giant mushrooms grow wild in this strange forest, where seasons change in the blink of an eye and unusual devices are part of the scenery. Thick vines weave through the trees, and natural updrafts blow fungi spore into the air.	Flying Battery Zone: Booby traps rule around Robotnik's Flying Battery blimp. Giant propellors and missile traps line the outside, while the interior is filled with false robot machines and spinning corkscrew columns.
Sandopolis Zone: Heat vapors rise from the sizzling sand, distorting the distant pyramids against a sunset sky. Monumental towers stand like gods in the massive desert, while sandfalls flow from plateaus. Ghosts and darkness rule inside the pyramids.	Lava Reef Zone: Magma flows through this rocky maze of underground tunnels...the inside of an active volcano. Things cool down in Act 2, where the buried ruins of an ancient time rest upon hardened magma flows.
Hidden Palace Zone: Resting place for the Master Emerald, hyroglyphic carvings on the walls of this ancient palace tell of the power within this giant stone. Perhaps...a prophecy?	Sky Sanctuary Zone: As Robotnik's Death Egg re-launches, the delicate towering ruins crumble from their foundations. It's a race to the top, as Sonic and Tails chase the Eggman into the clouds along the crumbling towers of a lost civilization.
Death Egg Zone: The Death Egg's interior is a massive arena of electrical & mechanical traps and metallic floors. The outside is a whirling shell where gravity is little more than a state of mind...	No image available. Doomsday Zone: It's a mad dash through the vast infinity that is outer space. As Robotnik tries to escape with the Master Emerald, it's up to Super Sonic to maneuver against the flow of a meteor shower and stop the Eggman's getaway.

-- MIDI Collection -- Mushroom Hill (Act 1) -- S&K Collection Mushroom Hill (Act 2) -- S&K Collection Flying Battery (Act 1) -- S&K Collection Flying Battery (Act 2) -- S&K Collection Sandopolis (Act 1) -- S&K Collection Sandopolis (Act 2) -- S&K Collection Lava Reef (Act 1) -- S&K Collection Hidden Palace Zone -- S&K Collection Sky Sanctuary Zone -- S&K Collection Death Egg (Act 1) -- S&K Collection Death Egg (Act 2) -- S&K Collection Doomsday Zone -- Koryan Special Stage -- S&K Collection Glowing Spheres Bonus -- S&K Collection Slot Machine Bonus -- S&K Collection Knuckles' Theme -- S&K Collection Robotnik's Theme -- S&K Collection Sub-Boss -- S&K Collection Ending Theme -- S&K Collection

-- Related Media -- · US Cover · Japanese Cover · Logo · Sonic & Knuckles Collection · Original soundtrack · Japanese manual cover · Japanese story

Level-Select: Start a normal game as Sonic or Knuckles. Grab onto one of the pump elevators in the Mushroom Hill Zone, and pump it to the top. While still hanging on, press: Left, Left, Left, Right, Right, Right, Up, Up, Up, START. You should hear a Ring chime. (NOTE: This trick does not work with Sonic Jam.) Secret Special Stages: Lock-On Sonic & Knuckles with just about any Sega Genesis game cartridge. You should get a screen with an off-color Sonic, Tails, Knuckles, and Robotnik. The scrolling message "No way! No way! No way! No way?" should appear at the top of the screen. Press A+B+C to play a secret Special Stage. Unlimited Special Stages: For unlimited hidden stages, Lock-On Sonic & Knuckles with Sonic 1. A screen should appear with a properly colored Sonic, Tails, Knuckles, and Robotnik. The message "No way! No way! No way! No way?" will scroll at the top of the screen. Press A+B+C to get a password and some instructions. Hope you've got alot of time on your hands! Sonic 2 & Knuckles Level-Select: When Sonic & Knuckles is "Locked-On" with Sonic 2, you can access a level-select by pressing the following sequence at the title screen: Up, Up, Up, Down, Down, Down, Left, Right, Left, Right, A + START. You'll hear a Ring chime if you've done it correctly. Now you can select your Zone as Knuckles. Sonic 2 & Knuckles Construction Mode: At the Sound Test on the level-select screen, play the following tracks: 1, 9, 9, 4, 1, 0, 1, 8. You should hear a Ring chime if you've put the code in correctly. Now hold down "A" and select your Zone. Controls are as follows: A = Changes highlighted item. B = Toggles between items and Sonic. C = Places highlighted item. Pause and press A to reset. Pause and hold B for slow-motion. Pause and hold C for single-pixel movement. Sonic 3 & Knuckles Level-Select: When Sonic & Knuckles is "Locked-On" with Sonic 3, start a normal game as any character. Grab onto one of the swinging vines in the Angel Island Zone and press: Left, Left, Left, Right, Right, Right, Up, Up, Up, START. You should hear a Ring chime. (NOTE: To get this trick to work with Sonic Jam, simply pause the game and select "Restart Game". You should be brought back to the title screen. Now select the third "Sound Test" option.) Level-Select: (Sonic & Knuckles Collection) Choose "Sonic & Knuckles", then choose any character and go to the Angel Island Zone. Grab onto one of the swinging vines and press: Left, Left, Left, Right, Right, Right, Up, Up, Up. You should hear a Ring chime. Now return to the title screen and select the new "Sound Test" option.

Screenshots thanks to Jonathan "WB" Gray, Chan Soen Mun David, and Sega Online. Taken from the Genesis and PC versions. Box covers from Sega Online and Sega Entertainment Universe. Information compiled and arranged by Jared "Green Gibbon!" Matte.