When you complete an act of a zone that
doesn't have an major boss on it,when the finish post falls down quickly run to where it will fall,then before it touches the ground as much as you want before the timer runs out.
On levels that allow you to travel upwards or downwards greatly as you progress as Sonic, go to an area where Knuckles' path starts. Hold down and wait for the screen to drop, then jump (do not spindash). If done correctly at a area that will cause this, the screen will shift and scroll in a loop back to you. During this time, you are free to walk through walls. This can also be done in select areas of levels where there is no path for Knuckles.
Sonic The Hedgehog 2 on the sound test screen, play sounds in the following order- 19, 65, 9, 17 then keep pressing a+start simultaneously. You may be taken into the first level but keep on doing it, you will be taken to a stage select screen.
After performing the Level Select code (up, down, left, right, B+Start), go back to the game title with Z. During the title screen, push up, X, down, X, left, X, right, X, then B+Start. Pick a level and push B+Start to begin. The debug mode should be active. Push A to enter/exit the mode, B to swap items, and X to place them.
The debug code for Sonic 2 and Knuckles is different to normal Sonic 2. When in the level select screen, which is accessed by pressing Up (x3), Down(x3), Left, right, left, right, then holding the button which is the equivalent of the Mega drive A Button and pressing start, go to the sound test section and play the following sounds, using the Mega Drive B button: 1, 9, 9, 4, 1, 0, 1, 8 Then select the level you wish to debug and hold the mega drive A button, then press start. The Debug controls are: Mega Drive A: Cycle sprites Mega Drive B: Toggle between knuckles and sprite Mega Drive C: Place sprite in level
If you use the level select cheat (At Press Start bit press A B Right B X Up Down B then press start on start game) then start the final fight and then press start and then B and the game will do its ending sequence
Code
Effect
At Press Start bit press A B Right B X Up Down B then press start on start game
Start a 1-player game on AIZ and grab a swing.While swinging, press left left left right right right up up up. You will hear a ring sound if entered correctly. Then pause and press A to return to the title screen. Press down twice to highlight the sound test you unlocked and press start. Select Mushroom Hill and do the same thing on the first thing you can hang on to (like the swing vines in AIZ). Do the same 3 left 3 right 3 up pause and press A. Go to the sound test and simply hold down A while selecting a level. Also while on level select, press C to change character.
00 = Sonic & Tails
01 = Sonic
02 = Tails
03 = Knuckles
This secret works only in sonic 2, sonic 3, sonic & knuckles, Knuckles in Sonic 2, and Sonic 3 & knuckles.
First, you need to enter in the level select cheat for the selected game. Now, whenever you play(until you quit), press START/PAUSE, hold A, and now you can move in slow motion! A special bonus is, the clock won't run down! This is a great way to see things coming, and is epecially helpful on The Doomsday Zone in Sonic 3(& knuckles). The only problems are, to jump, you have to use X, and if you press B, you'll go back to the title screen.
Begin a new game and get to the first pulley machine and hang on one of the handles and press Left, Left, Left, Right, Right, Right, Up, Up, Up and listen for chime. Then press pause the game and press B to return to main menu. Next Hold Down the B button again and press Start to access the level select screen. Remember you will not be able to access all levels in that game without switching Sonic and Knuckles.
If you remember the codes from Sonic 1, 2, or 3, well here they are again, because they work!
Sonic 1:
Level Select:
On the title screen, press 'Up, Down, Left, Right' on the d-pad. You will hear a chime. While holding the button that is the Genesis A button, press start.
Easy Emeralds:
After doing the level select code, go into the special stage and collect the emerald. Hit Z and go back to the title screen. Do this until you have all of the emeralds.
Sonic 2:
Level Select:
Go into the options menu. From there, play these sounds in the following order: '19, 65, 09, 17'. You will hear a chime. While sound effects is highlighted, press start. On the main menu, hold the button that is the Genesis A button, and press start.
Easy Emeralds:
Same method as Sonic 1.
Super Sonic:
On the level select screen, play these sounds in the following order: '4, 1, 2, 6'. Start any stage. When you get 50 rings, jump and you will become Super Sonic.
Debug Mode:
On the level select screen, play these sounds in the following order: '1, 9, 9, 2, 1, 1, 2, 4'
Level Select (when locked onto S&K):
At the title screen, press 'Up, Up, Up, Down, Down, Down, Left, Right, Left, Right' on the D-Pad. While holding the button that is the Genesis A button, press start.
Sonic 3:
Level Select:
During the time it shows Sonic, press 'Up, Up, Down, Down, Up, Up, Up, Up' on the D-Pad. This may take a few tries. If done right, you can go down past 'Competition' on the main menu, getting an 'Options' menu.
Debug Mode:
On the level select screen, go to any stage and hold the button that is the Genesis A button, and press start.
Sonic Spinball:
Pick a Level:
On the options menu, press 'A, Down, B, Down, C, Down, A, B, Up, A, C, Up, B, C, Up'. You will hear a chime. Go back to the main menu. Hold A and press start for level 2, B and start for level 3, and C and start for level 4.
In Sonic Mega Collection, the version of Sonic 1 you play is the Japanese version.
You can play the US version by pressing, on the info screen for Sonic 1, Up, Z, Down, Z, Left, Z, Right, Z. The American version differs in that the clouds don't move in Green Hill, there's no wavy water in Labyrinth, and the level select is in the wrong order.
To play another Japanese version, which fixes the bug which makes you continue to take hits when you hit spikes even if you're flashing and supposed to be temporarily invincible, hit, on the same screen, Z, Z, Z, Z, Z, Z, Z, Z, Z, Up, Down, Left, Right.
Do the level select code then go to the level select screen, then go to sound,(The one on the level select screen) do sounds 1,9,9,2,1,1,2,4. You should hear a ring sound,if not try again. Choose a level, hold B+Start until game play begins. (A on the sega genisses) There should be numbers and letters on the score meter. The time should be messed up too. Press A to turn into an object. Press B to scroll through objects. Press X to paste the object. Press A to turn back into Sonic or Tails. (Depending on who you are using) Have fun!
Go to Angel Island Zone. Get on a swinging vine and press Left, Left, Left, Right, Right, Right, Up, Up, Up. You should hear a ring. Now pause and press A. You will be at the title screen. Press Up to find a Sound Test menu. Choose it. Once there, choose Mushroom Hill Zone. Go to one of those metal things you pull to lift yourself. Get on it and press Left, Left, Left, Right, Right, Right, Up, Up, Up. You should hear a ring. Now pause and press A. You will be at the title screen. Go to Sound Test and highlight the level you want to debug in. Hold A and select the level.
Controls are:
B: Turn into object. A: Scroll through objects. C: Place objects.
Have fun!
Cool Trick:
After performing the code, you can take characters to levels they couldn't otherwise reach. Tails in Doomsday, anyone?
In Sonic 3 or Sonic 3 and Knuckles,In the first act of Launch Base Zone, stand between the two sirens that attract the bird enemies to you, ( If playing as Sonic and Tails, use controller two and have Tails walk out of the way ) stand in the middle and move a bit to the right, just touching the second siren. Now start a spinball, but keep spinning ( Let go of A ) and if done right, the bird enemies should keep dive bombing you, and the more that are killed,the more your points rack up. Keep this up until your points rise too 10,000 for every kill, Eventually, you'll get a lives every 15 seconds! Lives that you'll need for the upcoming fight!
When the WHOLE title screen is shown( Dr Robotniks Mean Bean Machine) Press Up on the Analog stick, then b then a then x and the words letters in the word MEAN will jump according to wich button you press (M=UP on analog stick)(E=b button) ( A= A button) (N= X button)
Plug in two controlers and go to sonic 3, get to 1-player mode. the 2nd controler will be tails. Note: this will all be on 1 screen and only sonic can make the screen scroll. But tails does not run out of lives and he can do damage to bad guys. This should help you beat the game.
Contrary to most peoples beliefs, Super Tails is real and you can get him in a legitimate way. To start off, you must be playing Sonic 3 and Knuckles. Second, you must be playing as only Tails. During the first half of the game (The Sonic 3 half) You must obtain all 7 chaos emeralds. This means you must have them all by the end of Launch Base zone. Once you start Mushroom Hill zone, if you have all the emeralds, you will see Knuckles jump out of a secret cave. (You can't miss it) Push the switch and enter the giant ring, if you notice, the ring is glowing several colors, not just gold. Enter it and you will see a cutscene where the 7 emeralds take thier places alongside the Master Emerald. Now, every time you enter a giant ring, you will be teleported to that room. Simply step on an emerald and pass the level to obtain a Super Emerald. Once you have all 7 Super Emeralds, that's it. The master emerald will twinkle and you can become Super Tails! Just collect 50 rings and hit the jump button in mid-air. Super tails runs faster, jumps higher, is invincible, but I think the best part is: the fact that he has tiny attack birds! These birds will kill anything on screen for you. During boss fights, just sit back and watch, they will do all the work if you let them. If you collect all the Super Emeralds with Sonic, he will become faster and gain a double jump ability. When Sonic performs this double jump, it kills everything on screen. If you get them with Knuckles, He will climb, run, and jump faster, and every time you stick to a wall, the screen will shake and you will kill everything on screen.