Sonic The Hedgehog 4 - 1997 -Sonic What IF Number Series-

Part of my "Sonic What IF Number Series" as in if SEGA actually made Sonic 4 what it was supposed to be. This was thought up by me (WarpedMarioBros) and Sheldon.
== Sonic The Hedgehog 4 (1997) ==
Released on the Genesis 32X and Sega Saturn. Just like 3D Blast, it would have seperate music for the 32X and Saturn version. It would take place after Sonic 3 & Knuckles in a new island called "East Side Island". The game would be a prequel to Knuckles' Chaotix and have Chaotix-styled sprites. It'd have Sonic, Tails, and Knuckles as playable characters and would have a main menu. The main menu would have the following: "Main Game", "Competition", and "Options". The main game would also have a save select. Also, Eggman and Metal Sonic will be unlocked as playable characters once you complete Eggman Empire in Sonic's story.
=== Zones (Sonic & Tails): ===
- Sunshine Hill
- Splash Park
- Foggy Swamp
- Magnetic Base
- Newtrogic City
- Aqua Mine
- Casino Desert
- Mountain Ridge
- Egg Fortress (Final Zone)
- Eggman Empire (True Final Zone)
=== Sunshine Hill Zone (Zone 1 - Sonic & Tails) ===
Has stripes on the dirt like how Green Hill has checkerboard squares on the dirt. There are trees, bushes, a few waterstreams, and some dandelion flowers. The grass is the one that checkerboard squares. Also, there are sun statues lying around the place.
==== Act 1 ====
The background is a quite peaceful valley. The mechanics are the swinging vines from Splash Hill, loop-de-loops like in Green Hill/Emerald Hill but with stripes, bridges and loops. The boss of this act will be Orbounce. Orbounce will look like Big Shaker (miniboss) from Sonic 3 & Knuckles, but different, try to bounce to stomp on you.
==== Act 2 ====
The background shows that there are a few huts around the valley. You can also see some streams. The sun is in the background above it all. Mechanics are the same, adding wooden platform stuff like in Sunset Hill, a few small water areas like the ones in Green Hill Act 2, and yeah. The boss will be the Kyodai Eggman Robo from The Doomsday. It's a bit torn up as you can see. Eggman will try to catch you with the robot's hands similar to the phase 3 boss in Launch Base Act 2 and the Death Egg Robot boss in Sonic 2. He'll also jump over you at times.
==== Enemies ====
Sunshine Hill Zone enemies:
Buzz Striker - Unlike Buzz Bomber (In Sonic 1), Poh-Bee (In Sonic CD), and Buzzer (Sonic 2), Buzz Striker shoots 2-3 times at you and moves similar to Buzz Bomber.
Banzani - A monkey-type robot who starts at the trees. If you're close enough, he'll jump at you. If he lands down, he'll start throwing bombs at you, like the monkey-type robots in Sonic Adventure.
Chomp-Chomp - Instead of going just up and down, like Chomper (Sonic 1) and Masher (Sonic 2), it'll go left and right as well, like a U turn.
Charged Motobug - Unlike the original Motobug in Sonic 1, will charge at you like the RhinoBots in Sonic 3 & Knuckles.
Crabmeat - Does the same thing from Sonic 1.
=== Splash Park Zone (Zone 2 - Sonic & Tails) ===
The floor is made up of cement-ish blocks with a fish symbol in each cementish block. And with all the water stuff, you're sure to get wet.
==== Act 1 ====
The background has a few trees and wooden fences. You can also see some mountains over at the distance. The mechanics are water sloshers which are placed in every long down slopes, which will send you sliding down, gushers to take you up whenever you need to get to a high area, and yeah. The boss will be Turtletron XL. It's a bigger version of the Turtletron, which I will get to later. The Turtletron XL is a green turtle-type robot that'll launch missiles from its shell. Every time you attack, it will hide for 6-7 seconds.
==== Act 2 ====
You see a tunnel that's next to a sign that says "Don't go in! This part of the park is closed". Once you get out of the tunnel, you find out why. Because, it's been snowed up! The background is the same except the trees, fences, and mountains have snow on them. The floor is slippery since there's ice on it. The water sloshers and gushers have been iced up to. There are also a few ice sculptures around that look like... Robotnik? Cleary he must be the one behind the snow. The mechanics are the ice slides (since the sloshers stopped working, in which you'll use the ice slides instead), and the most important one: the temperature. Every time a text that says 0 degrees, you'll freeze. That'll happen every 30 seconds, unless you have a fire shield, in which will happen never. The boss will be the Egg Yeti! The Egg Yeti is controlled by Eggman's ride, and will stomp a few times, causing ice spikes to appear, which will go to the direction the Egg Yeti stomped to. It'll also throw icicle boomerangs at you. Good thing you'll be able to jump over them.
==== Enemies ====
The same enemies from Sunshine Hill minus Charged Motobug, Crabmeat, and Chomp-Chomp, adding
Turtletron - It's basically the Turtletron XL, but smaller, and it doesn't fire missiles at you. It moves very slowly and when it spots you, it hides in its shell. If you're not in front of it anymore, it'll stop hiding.
Buzz Seeker - Similar to the Buzz-type robots in Tidal Tempest, but when it sees you, it'll charge right at you.
Hovercraft - A dragonfly-type robot that goes up and down.
Penguinator (Act 2) - Does the same thing from Sonic 3 & Knuckles.
=== Foggy Swamp Zone (Zone 3 - Sonic & Tails) ===
A very foggy swamp indeed, with the dirt having a few rocks inside. There are Swamp trees and a few tall grass as well.
==== Act 1 ====
The background is inside the Swamp. There are also a few fog areas around. The mechanics are loops, a few water marsh areas with lily pads that you could use to avoid water routes, and the swinging vines. The boss will be Drilltron. Drilltron will drill deep into the dirt and attack you by surprise.
==== Act 2 ====
Act 2 - Due to all the drilling Drilltron has done, right after you defeat him, you fall into the underground of Foggy Swamp. That's where Act 2 will take place. The background shows a lot if rocky areas with moss growing on parts of the areas. The mechanics are the same, with an addition of Mystic Cave's mechanics. The boss will be Submarine Eggman III. Eggman will hide at times like he did with the previous versions of Submarine Eggman, but it'll be different. You'll have 3 platforms to stand on, and when Eggman is in hiding, he'll destroy the platform you're on with an Egg Bomb and it won't come back until Eggman hides again.
==== Enemies ====
The same enemies from Splash Park minus Turtletron and Penguinator, with the return of Chomp-Chomp, and an addition of
Ribbot - A frog-type robot that's seen on the lily pads of Foggy Swamp. It just hops from 1 lily pad to another.
Crawlton (Act 2) - Does the same thing from Sonic 2.
=== Magnetic Base Zone (Zone 4 - Sonic & Tails) ===
A Base found in Newtrogic City in which tests out giant magnets and such. The floors are similar to Chemical Plant's and Scrap Brain's. There aren't any pipes though.
==== Act 1 ====
The background shows that you're inside of the base. The mechanics are the electromagnets from Flying Battery, and the Gigamagnets (which if you're in one, you can launch yourself out, leading you to either an area with either ring/shield monitors, or a Special Stage ring). Those mechanics only work if you have an electric shield. The boss will be Orbinaut XL (and yes, there are Orbinaut badniks in this zone). Orbinaut XL will try throw spike balls directly at you.
==== Act 2 ====
Act 2 - Takes place outside the base, showing many other buildings that are a part of the base. The mechanics are the same. The boss will be Electric Eggman: Eggman's new thingamajig to ride in which has stick-like things rotating around it which can electrocute you. When Eggman dives in, the stick-like things will activate, electrocuting anything that comes in his way. Luckily, there are 2 platforms you can jump on to avoid that.
==== Enemies ====
Bomb mk.II - Does the same thing as mk.I from Sonic 1.
Orbinaut X - It'll act like the Orbinaut from Launch Base (Sonic 3 & Knuckles).
Orbinaut X (Unidus) - It'll act like the Orbinaut from Labyrinth (Sonic 1).
Orbinaut X (Uni Uni) - It'll act like the Orbinaut from Star Light (Sonic 1).
Blaster - Does the same thing from Sonic 3 & Knuckles.
=== Newtrogic City Zone (Zone 5 - Sonic & Tails) ===
A city that is build by the creators of Newtrogic High Zone, a.k.a Carnival Island. The zone takes place at night since Magnetic Base also takes place at night. The floors are similar to Route 99's floors. There are streetlights and vertical cylinder things with checkerboard tiles.
==== Act 1 ====
The background shows a big city. As you progress, the sun rises more and more. The mechanics are a mix of Star Light's mechanics and Spring Yard's mechanics. The boss will be Tails Doll. Before the boss begins, Tails Doll will push you out of the platform. Then Tails carries you like he did in the boss of Marble Garden Act 2, and that's when the boss begins. He will charge at you and strike lightning from his metal antenna orb that’ll drain down your wings when you get hit by it. Once he's defeated, you'll see that Tails led you to Act 2.
==== Act 2 ====
The background shows you're in the middle of the city with buildings everywhere. There will also be news reports of a hero saving the city from ruin, which is Sonic. The mechanics are the same, but with the Speed launchers from Wacky Workbench. The boss will be Metal Sonic. Before the boss, you see that Eggman is reactivating Metal Sonic, giving him a few new abilities too to prevent another Stardust Speedway incident. Metal Sonic will spindash at you a few times. He'll also throw electric orbs at you.
==== Enemies ====
The same enemies minus Blaster and Orbinaut X (Unidus).
=== Aqua Mine Zone (Zone 6 - Sonic & Tails) ===
A hidden maze with many shiny minerals glowing. The floor will be similar to Labyrinth and Hydrocity. There will be crystals formed around the area.
==== Act 1 ====
The background shows many formed crystals with the water below it. The mechanics will have loops, strong water currents that will carry Sonic through the winding tunnels with polls to alter position in order to avoid spikes, the moving platforms from Labyrinth, and yeah. The boss will be Drilltron once more. He'll do the same thing he did in Foggy Swamp, except when he drills, things will fall like in Mystic Maze, so you'll have to avoid a few things.
==== Act 2 ====
The background shows ancient ruins and a few water areas. The mechanics are the same with an addition of crystal platforms that'll break if you're on it, minecarts, and buttons you'll have to press to get through certain areas. The boss will be the Egg Miner: Eggman's new ride with a big drill at the bottom. Eggman will move left and right to try and drop on you. If he misses, you'll have 5 seconds to jump on him.
==== Enemies ====
The same enemies from Newtrogic City minus Bomb and Orbinaut X (Normal and Uni Uni), with the return of Orbinaut X (Unidus) and an addition of
Pointdexter - Does the same thing from Sonic 3 & Knuckles.
Burrobot - Does the same thing from Sonic 1.
=== Casino Desert Zone (Zone 7 - Sonic & Tails) ===
The floor is a greenish casino floor with Cacti and small Sphinx models. There's also sand because why not? It is a desert after all.
==== Act 1 ====
The background shows the desert wasteland with Cacti in the background. The mechanics are a mix of Casino Night's mechanics and Sandopolis's mechanics. The boss will be Meta Catterkiller. It's a bit smaller than the Uber Caterkiller from Mirage Saloon. It'll attack like Uber Caterkiller, but won't attack from the front nor the back.
==== Act 2 ====
The background shows the rest of the Casino, showing the Egyptian city. The mechanics remain the same. The boss will be Big Arms from phase 2 of the Launch Base Act 2 boss. Eggman will use Big Arms to throw its fists at you in the background, charge its fists at you in the foreground, and Eggman will throw Egg Bombs at you in which you’ll have to send them back, like the Egg Dragoon fight in Sonic Forces.
==== Enemies ====
Returns Crawlton with an addition of
Skorp - Does the same thing from Sonic 3 & Knuckles.
Rock'n - Does the same thing from Sonic 3 & Knuckles.
Cacti Cannon: A Cactus-type robot that spits spike tiny spike balls at you.
Caterkiller mk.II - Does the same thing as mk.I from Sonic 1.
=== Mountain Ridge Zone (Zone 8 - Sonic & Tails) ===
The floor is very rocky and is the level under Egg Fortress. This level will have 3 acts.
==== Act 1 ====
The background shows many mountains. The mechanics will be a few lava pits with rocks in the lava will sink when the player steps on them like the ones in Lava Reef and Fireballs that'll jump out of some lava pits like the ones in Marble. There will be no boss for this act.
==== Act 2 ====
The screen starts shaking a bit, then Act 2 begins. The background shows that the mountains have erupted. The sky has become red and lava is flowing out of the mountains. The mechanics are the same. The boss of this act will be Flame Craft 2.0. Unlike 1.0 (Sonic 3 & Knuckles), 2.0 will have more movement.
==== Act 3 ====
Right after the Level Results for Act 2, Knuckles appears at the Tornado to pick up Sonic and Tails, and that's when Act 3 begins. This act will be like Sky Chase Zone. The boss is Metal Sonic once again. It'll be like the 1st Metal Sonic boss of Sonic 4 Episode 2. He’ll fly ahead of you and the tornado will have a health bar if the bar runs out you’ll crash. He will spin dash at you fire huge beams and teleports behind you.
==== Enemies ====
Caterkiller mk.II (Act 1 & 2), Buzz Striker (Act 1 & 2), and Buzz Seeker (Act 1 & 2) returns with an addition of
Rexon (Act 1 & 2) - Does the same thing from Sonic 2.
Balkiry (Act 3) - Does the same thing from Sonic 2.
Nebula (Act 3) - Does the same thing from Sonic 2.
Turtloids (Act 3) - Does the same thing from Sonic 2.
=== Egg Fortress Zone (Zone 9 - Sonic & Tails) |Final Zone| ===
The floors are similar to Scrap Brain's and Death Egg's (Sonic 3 & Knuckles)
==== Act 1 ====
The background shows that you're inside of the fortress. The mechanics will be the electricity fields from Death Egg and propellers from Wing Fortress/Flying Battery. The boss will be Gapsule 2.0. Unlike 1.0 (Sonic 3 & Knuckles), 2.0 will to use a laser thing similar to the laser thing in Wing Fortress. You'll have to aim the laser at the capsule to proceed to the next act.
==== Act 2 ====
Outside the fortress you can see all if East Side Island. The mechanics are the same with propeller poles from Flying Battery. The boss for this act is waiting inside, so you go inside the Fortress once again and meet the final boss. Phase 1 will be a race against Metal Sonic, which will be like the race in Sonic CD. After Metal is defeated, you get outside the base again and meet Phase 2 of the final boss: Titan Egg Robot! Titan Egg Robot will appear in the background with Robotnik inside, laughing. Eggman will blast lasers at you (the lasers will appear foreground) and will shoot missiles at you. He'll even throw rocks from Mountain Ridge that you'll have to send back like Phase 1 of the Death Egg Robot boss in Sonic Forces.
==== Enemies ====
Blaster and Buzz Seeker returns with an addition of
Clucker mk.II - Does the same thing as mk.I from Sonic 2.
=== Eggman Empire Zone (Zone 10 - Sonic) |True Final Zone| ===
You'll only be able to get to this zone if you have all the Chaos Emeralds. If you do, right after Sonic & Tails jump off of Egg Fortress, Sonic will turn into Super, and the zone begins. Eggman will start moving away from you and you have to chase him down. With no Titan Egg Robot, he'll fire lasers and tiny electric spheres at you. The background is the Egg Fortresses floating above East Island Zone.
=== Endings (Sonic & Tails) ===
==== Bad Ending ====
Since you can't access Eggman Empire without the Chaos Emeralds, a cutscene of Sonic and Tails jumping of Egg Fortress will play. Once they reached the ground, they'll see Egg Fortress crashing down on the island. After that, the animals celebrate and Sonic and Tails jump off the ground to do their victory poses. In the credits, you'll see Eggman laughing next to Metal Sonic with a stormy sky.
==== Good Ending ====
After Eggman's defeat in Eggman Empire, a cutscene of Tails flying on the Tornado will play. Sonic then appears. They then both land on the ground and see Egg Fortress crashing down on the island. After that, the animals celebrate. Then Tails jump off the ground to do his victory pose, and Sonic flies at the screen to do his victory pose. In the credits, you'll see Sonic, Tails, and the Tornado with a clear sky.
=== Zones (Knuckles): ===
- Sunshine Hill
- Splash Park
- Foggy Swamp
- Magnetic Base
- Newtrogic City
- Aqua Mine
- Casino Desert
- Mountain Ridge (Final Zone)
=== Sunshine Hill Zone (Zone 1 - Knuckles) ===
Has stripes on the dirt like how Green Hill has checkerboard squares on the dirt. There are trees, bushes, a few waterstreams, and some dandelion flowers. The grass is the one that checkerboard squares. Also, there are sun statues lying around the place.
==== Act 1 ====
The background is a quite peaceful valley. The mechanics are the swinging vines from Splash Hill, loop-de-loops like in Green Hill/Emerald Hill but with stripes, bridges and loops. The boss of this act will be Orbounce. Orbounce will look like Big Shaker (miniboss) from Sonic 3 & Knuckles, but different, try to bounce to stomp on you.
==== Act 2 ====
The background shows that there are a few huts around the valley. You can also see some streams. The sun is in the background above it all. Mechanics are the same, adding wooden platform stuff like in Sunset Hill, a few small water areas like the ones in Green Hill Act 2, and yeah. The boss will be the Mecha Sonic. Before the boss, Knuckles spots Eggrobo fixing Mecha, but when he spotted Knuckles, the boss begins. Mecha Sonic will be like in Sky Sanctuary Phase 1K, but easier, and since Mecha Sonic wasn't fully fixed, he gets destroyed.
==== Enemies ====
Sunshine Hill Zone enemies:
Buzz Striker - Unlike Buzz Bomber (In Sonic 1), Poh-Bee (In Sonic CD), and Buzzer (Sonic 2), Buzz Striker shoots 2-3 times at you and moves similar to Buzz Bomber.
Banzani - A monkey-type robot who starts at the trees. If you're close enough, he'll jump at you. If he lands down, he'll start throwing bombs at you, like the monkey-type robots in Sonic Adventure.
Chomp-Chomp - Instead of going just up and down, like Chomper (Sonic 1) and Masher (Sonic 2), it'll go left and right as well, like a U turn.
Charged Motobug - Unlike the original Motobug in Sonic 1, will charge at you like the RhinoBots in Sonic 3 & Knuckles.
Crabmeat - Does the same thing from Sonic 1.
=== Splash Park Zone (Zone 2 - Knuckles) ===
The floor is made up of cement-ish blocks with a fish symbol in each cementish block. And with all the water stuff, you're sure to get wet.
==== Act 1 ====
The background has a few trees and wooden fences. You can also see some mountains over at the distance. The mechanics are water sloshers which are placed in every long down slopes, which will send you sliding down, gushers to take you up whenever you need to get to a high area, and yeah. The boss will be Turtletron XL. It's a bigger version of the Turtletron, which I will get to later. The Turtletron XL is a green turtle-type robot that'll launch missiles from its shell. Every time you attack, it will hide for 6-7 seconds.
==== Act 2 ====
You see a tunnel that's next to a sign that says "Don't go in! This part of the park is closed". Once you get out of the tunnel, you find out why. Because, it's been snowed up! The background is the same except the trees, fences, and mountains have snow on them. The floor is slippery since there's ice on it. The water sloshers and gushers have been iced up to. There are also a few ice sculptures around that look like... Robotnik? Cleary he must be the one behind the snow. The mechanics are the ice slides (since the sloshers stopped working, in which you'll use the ice slides instead), and the most important one: the temperature. Every time a text that says 0 degrees, you'll freeze. That'll happen every 30 seconds, unless you have a fire shield, in which will happen never. The boss will be the Egg Yeti! The Egg Yeti is controlled by Eggrobo this time, and will stomp a few times, causing ice spikes to appear, which will go to the direction the Egg Yeti stomped to. It'll also throw icicle boomerangs at you. Good thing you'll be able to jump over them.
==== Enemies ====
The same enemies from Sunshine Hill minus Charged Motobug, Crabmeat, and Chomp-Chomp, adding
Turtletron - It's basically the Turtletron XL, but smaller, and it doesn't fire missiles at you. It moves very slowly and when it spots you, it hides in its shell. If you're not in front of it anymore, it'll stop hiding.
Buzz Seeker - Similar to the Buzz-type robots in Tidal Tempest, but when it sees you, it'll charge right at you.
Hovercraft - A dragonfly-type robot that goes up and down.
Penguinator (Act 2) - Does the same thing from Sonic 3 & Knuckles.
=== Foggy Swamp Zone (Zone 3 - Knuckles) ===
A very foggy swamp indeed, with the dirt having a few rocks inside. There are Swamp trees and a few tall grass as well.
==== Act 1 ====
The background is inside the Swamp. There are also a few fog areas around. The mechanics are loops, a few water marsh areas with lily pads that you could use to avoid water routes, and the swinging vines. The boss will be Drilltron. Drilltron will drill deep into the dirt and attack you by surprise.
==== Act 2 ====
Act 2 - Due to all the drilling Drilltron has done, right after you defeat him, you fall into the underground of Foggy Swamp. That's where Act 2 will take place. The background shows a lot if rocky areas with moss growing on parts of the areas. The mechanics are the same, with an addition of Mystic Cave's mechanics. The boss will be Submarine Eggman III. Eggrobo will hide at times like he did with the previous versions of Submarine Eggman, but it'll be different. You'll have 3 platforms to stand on, and when Eggrobo is in hiding, he'll destroy the platform you're on with an Egg Bomb and it won't come back until Eggrobo hides again.
==== Enemies ====
The same enemies from Splash Park minus Turtletron and Penguinator, with the return of Chomp-Chomp, and an addition of
Ribbot - A frog-type robot that's seen on the lily pads of Foggy Swamp. It just hops from 1 lily pad to another.
Crawlton (Act 2) - Does the same thing from Sonic 2.
=== Magnetic Base Zone (Zone 4 - Knuckles) ===
A Base found in Newtrogic City in which tests out giant magnets and such. The floors are similar to Chemical Plant's and Scrap Brain's. There aren't any pipes though.
==== Act 1 ====
The background shows that you're inside of the base. The mechanics are the electromagnets from Flying Battery, and the Gigamagnets (which if you're in one, you can launch yourself out, leading you to either an area with either ring/shield monitors, or a Special Stage ring). Those mechanics only work if you have an electric shield. The boss will be Orbinaut XL (and yes, there are Orbinaut badniks in this zone). Orbinaut XL will try throw spike balls directly at you.
==== Act 2 ====
Act 2 - Takes place outside the base, showing many other buildings that are a part of the base. The mechanics are the same. The boss will be Electric Eggman: Eggman's new thingamajig to ride in (even though Eggrobo is riding it) which has stick-like things rotating around it which can electrocute you. When Eggrobo dives in, the stick-like things will activate, electrocuting anything that comes in his way. Luckily, there are 2 platforms you can jump on to avoid that.
==== Enemies ====
Bomb mk.II - Does the same thing as mk.I from Sonic 1.
Orbinaut X - It'll act like the Orbinaut from Launch Base (Sonic 3 & Knuckles).
Orbinaut X (Unidus) - It'll act like the Orbinaut from Labyrinth (Sonic 1).
Orbinaut X (Uni Uni) - It'll act like the Orbinaut from Star Light (Sonic 1).
Blaster - Does the same thing from Sonic 3 & Knuckles.
=== Newtrogic City Zone (Zone 5 - Knuckles) ===
A city that is build by the creators of Newtrogic High Zone, a.k.a Carnival Island. The zone takes place at night since Magnetic Base also takes place at night. The floors are similar to Route 99's floors. There are streetlights and vertical cylinder things with checkerboard tiles.
==== Act 1 ====
The background shows a big city. As you progress, the sun rises more and more. The mechanics are a mix of Star Light's mechanics and Spring Yard's mechanics. The boss will be Tails Doll. He will charge at you and strike lightning from his metal antenna orb that’ll drain down your wings when you get hit by it. Since you won't have Tails to carry you, the fight will be on the platform.
==== Act 2 ====
The background shows you're in the middle of the city with buildings everywhere. There will also be news reports of a hero saving the city from ruin, which is Sonic. The mechanics are the same, but with the Speed launchers from Wacky Workbench. The boss will be Metal Knuckles. Before the boss, you see that Eggrobo is activating Metal Knuckles. Metal Knuckles will dig down and tackle you with his claws or even dig down grabbing a bolder to throw it at you.
==== Enemies ====
The same enemies minus Blaster and Orbinaut X (Unidus).
=== Aqua Mine Zone (Zone 6 - Knuckles) ===
A hidden maze with many shiny minerals glowing. The floor will be similar to Labyrinth and Hydrocity. There will be crystals formed around the area.
==== Act 1 ====
The background shows many formed crystals with the water below it. The mechanics will have loops, strong water currents that will carry Sonic through the winding tunnels with polls to alter position in order to avoid spikes, the moving platforms from Labyrinth, and yeah. The boss will be Drilltron once more. He'll do the same thing he did in Foggy Swamp, except when he drills, things will fall like in Mystic Maze, so you'll have to avoid a few things.
==== Act 2 ====
The background shows ancient ruins and a few water areas. The mechanics are the same with an addition of crystal platforms that'll break if you're on it, minecarts, and buttons you'll have to press to get through certain areas. The boss will be the Egg Miner: Eggman's new ride (even though Eggrobo is on) with a big drill at the bottom. Eggrobo will move left and right to try and drop on you. If he misses, you'll have 5 seconds to jump on him.
==== Enemies ====
The same enemies from Newtrogic City minus Bomb and Orbinaut X (Normal and Uni Uni), with the return of Orbinaut X (Unidus) and an addition of
Pointdexter - Does the same thing from Sonic 3 & Knuckles.
Burrobot - Does the same thing from Sonic 1.
=== Casino Desert Zone (Zone 7 - Knuckles) ===
The floor is a greenish casino floor with Cacti and small Sphinx models. There's also sand because why not? It is a desert after all.
==== Act 1 ====
The background shows the desert wasteland with Cacti in the background. The mechanics are a mix of Casino Night's mechanics and Sandopolis's mechanics. The boss will be Meta Catterkiller. It's a bit smaller than the Uber Caterkiller from Mirage Saloon. It'll attack like Uber Caterkiller, but won't attack from the front nor the back.
==== Act 2 ====
The background shows the rest of the Casino, showing the Egyptian city. The mechanics remain the same. The boss will be Big Arms from phase 2 of the Launch Base Act 2 boss. Eggrobo will use Big Arms to throw its fists at you in the background, charge its fists at you in the foreground, and Eggrobo will throw Egg Bombs at you in which you’ll have to send them back, like the Egg Dragoon fight in Sonic Forces.
==== Enemies ====
Returns Crawlton with an addition of
Skorp - Does the same thing from Sonic 3 & Knuckles.
Rock'n - Does the same thing from Sonic 3 & Knuckles.
Cacti Cannon: A Cactus-type robot that spits spike tiny spike balls at you.
Caterkiller mk.II - Does the same thing as mk.I from Sonic 1.
=== Mountain Ridge Zone (Zone 8 - Knuckles) |Final Zone| ===
The floor is very rocky and is the level under Egg Fortress. This level will have 3 acts.
==== Act 1 ====
The background shows many mountains. The mechanics will be a few lava pits with rocks in the lava will sink when the player steps on them like the ones in Lava Reef and Fireballs that'll jump out of some lava pits like the ones in Marble. There will be no boss for this act.
==== Act 2 ====
The screen starts shaking a bit, then Act 2 begins. The background shows that the mountains have erupted. The sky has become red and lava is flowing out of the mountains. The mechanics are the same. The boss of this act will be Flame Craft 2.0. Unlike 1.0 (Sonic 3 & Knuckles), 2.0 will have more movement. It'll also shoot missiles like in Knuckles' story in Sonic 3 & Knuckles.
==== Act 3 ====
After the level results for Act 2, Metal Knuckles will appear. He then uses the Super Emeralds and becomes bigger. He becomes Uber Metal Knuckles. He'll bash his hand on the ground, causing rocks to fall, which you'll have to avoid. You must attack on Metal Knuckles' hands in order to defeat him.
==== Enemies ====
Caterkiller mk.II (Act 1 & 2), Buzz Striker (Act 1 & 2), and Buzz Seeker (Act 1 & 2) returns with an addition of
Rexon (Act 1 & 2) - Does the same thing from Sonic 2.
=== Endings (Knuckles) ===
==== Bad Ending ====
After Uber Metal Knuckles is defeated, Knuckles sees Eggrobo trying to get away. He then jumps on Eggrobo, and Eggrobo crashes. After he got out of Mountain Ridge, he looks at it one more time before doing his victory pose. In the credits, you'll see Eggrobo laughing next to Metal Knuckles with a stormy sky.
==== Good Ending ====
After Uber Metal Knuckles is defeated, Knuckles sees Eggrobo trying to get away. He then jumps on Eggrobo, and Eggrobo crashes. After he got out of Mountain Ridge, he then sees Eggman and Metal. Knuckles follows them and then looks at Carnival Island (Newtrogic High). It looks like Eggman and Metal are heading there. Knuckles then does his victory pose. In the credits, you'll see Knuckles with a clear sky.
=== Zones (Eggman & Metal Sonic): ===
- Egg Fortress
- Mountain Ridge
- Casino Desert
- Aqua Mine
- Newtrogic City
- Magnetic Base
- Foggy Forest
- Splash Park
- Sunshine Hill |Final Zone|
=== Egg Fortress Zone (Zone 1 - Eggman & Metal Sonic) ===
The floors are similar to Scrap Brain's and Death Egg's (Sonic 3 & Knuckles) The background shows that you're inside of the fortress. The mechanics will be the electricity fields from Death Egg and propellers from Wing Fortress/Flying Battery.
==== Enemies ====
Blaster and Buzz Seeker returns with an addition of
Clucker mk.II - Does the same thing as mk.I from Sonic 2.
=== Mountain Ridge Zone (Zone 2 - Eggman & Metal Sonic) ===
The floor is very rocky and is the level under Egg Fortress. The background shows many mountains. The mechanics will be a few lava pits with rocks in the lava will sink when the player steps on them like the ones in Lava Reef and Fireballs that'll jump out of some lava pits like the ones in Marble.
==== Enemies ====
Caterkiller mk.II, Buzz Striker, and Buzz Seeker returns with an addition of
Rexon - Does the same thing from Sonic 2.
=== Casino Desert Zone (Zone 3 - Eggman & Metal Sonic) ===
The floor is a greenish casino floor with Cacti and small Sphinx models. There's also sand because why not? It is a desert after all. The background shows the desert wasteland with Cacti in the background. The mechanics are a mix of Casino Night's mechanics and Sandopolis's mechanics.
==== Enemies ====
Returns Crawlton with an addition of
Skorp - Does the same thing from Sonic 3 & Knuckles.
Rock'n - Does the same thing from Sonic 3 & Knuckles.
Cacti Cannon: A Cactus-type robot that spits spike tiny spike balls at you.
Caterkiller mk.II - Does the same thing as mk.I from Sonic 1.
=== Aqua Mine Zone (Zone 4 - Eggman & Metal Sonic) ===
A hidden maze with many shiny minerals glowing. The floor will be similar to Labyrinth and Hydrocity. There will be crystals formed around the area. The background shows many formed crystals with the water below it. The mechanics will have loops, strong water currents that will carry Sonic through the winding tunnels with polls to alter position in order to avoid spikes, the moving platforms from Labyrinth, and yeah.
==== Enemies ====
The same enemies from Newtrogic City minus Bomb and Orbinaut X (Normal and Uni Uni), with the return of Orbinaut X (Unidus) and an addition of
Pointdexter - Does the same thing from Sonic 3 & Knuckles.
Burrobot - Does the same thing from Sonic 1.
=== Newtrogic City Zone (Zone 5 - Eggman & Metal Sonic) ===
A city that is build by the creators of Newtrogic High Zone, a.k.a Carnival Island. The zone takes place at night since Magnetic Base also takes place at night. The floors are similar to Route 99's floors. There are streetlights and vertical cylinder things with checkerboard tiles. The background shows a big city. As you progress, the sun rises more and more. The mechanics are a mix of Star Light's mechanics and Spring Yard's mechanics.
==== Enemies ====
The same enemies minus Blaster and Orbinaut X (Unidus).
=== Magnetic Base Zone (Zone 6 - Eggman & Metal Sonic) ===
A Base found in Newtrogic City in which tests out giant magnets and such. The floors are similar to Chemical Plant's and Scrap Brain's. There aren't any pipes though. The background shows that you're inside of the base. The mechanics are the electromagnets from Flying Battery, and the Gigamagnets (which if you're in one, you can launch yourself out, leading you to either an area with ring/shield monitors). Those mechanics only work if you have an electric shield.
==== Enemies ====
Bomb mk.II - Does the same thing as mk.I from Sonic 1.
Orbinaut X - It'll act like the Orbinaut from Launch Base (Sonic 3 & Knuckles).
Orbinaut X (Unidus) - It'll act like the Orbinaut from Labyrinth (Sonic 1).
Orbinaut X (Uni Uni) - It'll act like the Orbinaut from Star Light (Sonic 1).
Blaster - Does the same thing from Sonic 3 & Knuckles.
=== Foggy Swamp Zone (Zone 7 - Eggman & Metal Sonic) ===
A very foggy swamp indeed, with the dirt having a few rocks inside. There are Swamp trees and a few tall grass as well. The background is inside the Swamp. There are also a few fog areas around. The mechanics are loops, a few water marsh areas with lily pads that you could use to avoid water routes, and the swinging vines.
==== Enemies ====
The same enemies from Splash Park minus Turtletron and Penguinator, with the return of Chomp-Chomp, and an addition of
Ribbot - A frog-type robot that's seen on the lily pads of Foggy Swamp. It just hops from 1 lily pad to another.
=== Splash Park Zone (Zone 8 - Eggman & Metal Sonic) ===
The floor is made up of cement-ish blocks with a fish symbol in each cementish block. And with all the water stuff, you're sure to get wet. The background has a few trees and wooden fences. You can also see some mountains over at the distance. The mechanics are water sloshers which are placed in every long down slopes, which will send you sliding down, gushers to take you up whenever you need to get to a high area, and yeah.
==== Enemies ====
The same enemies from Sunshine Hill minus Charged Motobug, Crabmeat, and Chomp-Chomp, adding
Turtletron - It's basically the Turtletron XL, but smaller, and it doesn't fire missiles at you. It moves very slowly and when it spots you, it hides in its shell. If you're not in front of it anymore, it'll stop hiding.
Buzz Seeker - Similar to the Buzz-type robots in Tidal Tempest, but when it sees you, it'll charge right at you.
Hovercraft - A dragonfly-type robot that goes up and down.
=== Sunshine Hill Zone (Zone 9 - Eggman & Metal Sonic) |Final Zone| ===
Has stripes on the dirt like how Green Hill has checkerboard squares on the dirt. There are trees, bushes, a few waterstreams, and some dandelion flowers. The grass is the one that checkerboard squares. Also, there are sun statues lying around the place. The background is a quite peaceful valley. The mechanics are the swinging vines from Splash Hill, loop-de-loops like in Green Hill/Emerald Hill but with stripes, bridges and loops.
==== Enemies ====
Sunshine Hill Zone enemies:
Buzz Striker - Unlike Buzz Bomber (In Sonic 1), Poh-Bee (In Sonic CD), and Buzzer (Sonic 2), Buzz Striker shoots 2-3 times at you and moves similar to Buzz Bomber.
Banzani - A monkey-type robot who starts at the trees. If you're close enough, he'll jump at you. If he lands down, he'll start throwing bombs at you, like the monkey-type robots in Sonic Adventure.
Chomp-Chomp - Instead of going just up and down, like Chomper (Sonic 1) and Masher (Sonic 2), it'll go left and right as well, like a U turn.
Charged Motobug - Unlike the original Motobug in Sonic 1, will charge at you like the RhinoBots in Sonic 3 & Knuckles.
Crabmeat - Does the same thing from Sonic 1.
=== Ending (Eggman & Metal Sonic) ===
Eggman and Metal Sonic looks over at the distance and spots Carnival Island (Newtrogic High). Metal Sonic carries Eggman over to the island, thus the beginning of Knuckles' Chaotix. In the credits, you'll see Eggman pointing at Carnival Island while Metal Sonic is carrying him. 
=== Shields ===
Fire Shield - Protects you from fire and lets you do a charge attack if you're Sonic.
Electric Shield - Protects you from electric things and attracts rings to you. It'll also let you do a double jump if you're Sonic.
Bubble Shield - Protects you from water and can let you do a bounce attack.
=== Special Stage ===
In the special stage, you'll be in a 3d area where you must get through obstacles to get the Chaos Emerald. You'll only have a limited amount of time.
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