Debug for sonic the hedgehog
Press these buttons at title screen:up+A down+A Left+A Right+A then hold y+b+a keep holding and press start wait till level starts then look at the score if its in hex text that means debug mode is activated press b to use it.Then y cycles different things in the level. And a is regular jump.
Contributed By: Supersonicx883.
Level select in sonic and knuckles.
In the first zone (Mushroom hill) Jump on one of those lifty things (The one that you press down on) and press left, left, left, right, right, right, up, up, up. You will hear a chime. Now, go get a game over. The game will restart. at the title screen, hold Y and press start. Now, you will be able to choose any level, including sonic 3 ones. Have fun!
Effect Code level select Left, Left, left, right right, right, up, up, up, chime, game over, hold Y and press start at title screen.
Contributed By: IAmClearlyBest.
Sonic The Hedgehog Level Select
At the title screen press up down left right. If done correctly you should hear a ring sound. Now hold Y and press start. You can now choose any stage you want
Contributed By: redxorange.
Level select in Knuckles in Sonic 2
Press up up up down down down left right left right, then hold Y and press start.
Contributed By: tortugaturtle.
Enable Debug Mode in Kunckles in Sonic 3
This is for Knuckles in Sonic 3 and works on Sonic Classic Collection. Start a new game and play through the entire game. After you have beaten the game, you are able to to pick any level on that save file. Now start on Zone 1 (Angle Island), go to the first swinging rope anf hang on it and then press Left, Left, Left, Right, Right, Right, Up, up, and Up. If done correctly, you will here a ring sound. Now die over and over until you get a game over, if you have any continues, do not use them, wait for the counter to goes to zero. Now go back to the same save file and this time select act 7 (Mushroom Hill). Go to the first pulley the is right past the dude that throws mushrooms and the Speed shoes box. (Knuckles needs to back track on Sonic's path once you get to the point where they merge) While hanging on it, press Left, Left, Left, Right, Right, Right, Up, Up, and Up. If done correctly, you will here a ring sound. Now die, and hold Y until the level reloads. Press B to confirm that the entire code has been enabled successfully. Get another game over if you wish to change levels. Just make sure to hold down Y when ever a level is loading.
Contributed By: KazoWAR.
Sonic & Knuckles Cheats
Debug mode in Sonic 3 and Knuckles
While playing sonic 3 and knuckles press Left, Left, Left, Right, Right, Right, Up, Up, Up in the mushroom hill zone, while on one of the pully things. (Just like level select in normal Sonic and Knuckles.) I think you have to do the level select code first.
Effect Code Debug mode Left, Left, Left, Right, Right, Right, Up, Up, Up
Contributed By: askg7.
Walk through walls
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 Cheats
Skip to the ending (JAPAN ONLY)
Use this code provided, then go to sound select, and select sounds 9F for the ending or 9E for the credits
Effect Code Unlock Up Down Down Down Left Right Up C C C C C C Up Down Down Down Left Right then hold A + Start.
Contributed By: TmanDaCool1.
Walk through walls in Marble Zone
When you ride the green block accross a sea of lave, there are a couple of big blocks in front of you with rings on. If you hold the D-PAD DOWN button, Sonic will crouch. The green block will go underneath the blocks, but sonic will remain on it, and pass through the walls. Note that this ONLY WORKS WHILE CROUCHING
Contributed By: reddragonflame.
Unlock Different ending
Unlockable How to Unlock Different ending Beat game with all chaos emeralds.
Contributed By: Pizzaman13.
Obtain Chaos Emeralds Easier
Using the level select cheat, scroll down and select "Special Stage". Upon completion on the stage, you will receive a chaos emerald, and begin playing your game on the first stage. At this point, RESET the game via the RESET button on your Genesis, re-enter the level select code, and repeat the process. You will enter the next Special Stage level, and have a chance to earn the 2nd Emerald. You can repeat this process over and over until you have all 6 Chaos Emeralds. However, once you have all six, do NOT reset the system and select a level, or else you will lose them all.
Contributed By: immortalskillit.
Sonic the Hedgehog 2 Cheats
Change Tails' name to Miles in game above lives
Press up, up, up, down, down, down, up at the title screen
Contributed By: Ness_.
Go to the Options menu from the title screen, and then while there go to Sound Select and play sound number 7E. You'll notice that the game music had stopped. Now start the game and you'll be able to play the game without any music and sounds.
Effect Code No Music and Sounds At the Sound Select in the Option menu, play sound number 7E
Contributed By: leeko_link.
Weird trick, but you can play this game in slow motion. First, enter the level select code, found somewhere in the list of all other codes. Then start your game in any level. When you start, press pause. Then hold down B button and try to do anything with Sonic. The game will play in slow motion as long as you hold down the B button.
Effect Code Causes the game to play in slow motion. Level Select, Pause, hold B
Contributed By: ak02.
Pseudo Super Sonic
In Oil Ocean Zone Act 2, if you manage to take a hit and end up landing in one of those green-and-gold checkered cannons, you'll fall right out, but you'll be moving at twice your normal speed as well as jumping twice your normal height(with twice as much gravity). In Oil Ocean Zone, Act 2, near the first set of pop-tops and cannons. Just jump into the semi-hidden bed of spikes on the right and land in the cannon.<p />Note: Moving at twice normal velocity can often get you stuck in a wall. Also, this wears off if you Super Spin Dash or Spin Dash. It also only lasts for that Act.
Normally, when you turn into super sonic you lose tails behind you all the time.
Well, after you put in the debug cheat and have started a level (preferrably Emerald Hill), turn yourself into a box and place it somewhere on the floor WHILE you are super sonic. It should be a switch places box. Hit it and you will see tails will have a permanent invincible circle around him. He will stay like this through the whole level, he will keep up with super sonic or even out run him. A very fun glitch for 2 players.
Contributed By: OriginalCheatFinder.
Secret Tails ending
If you beat the Death Egg with Tails you get the Tails ending.
Unlockable How to Unlock Tail's Ending. Beat the Death Egg with tails.
Contributed By: segadream131.
Get Super Sonic on Emerald Hill
First, you enter the stage select code, shown above. Then you go into the Special Stage in the stage select menu. Every time you finish the special stage press reset and go back to the special stage. Keep doing this until you get the sixth emerald. Then you don't press reset. It will just zap you with your six emeralds into emerald hill. Get the last emerald on Emerald Hill get 50 rings and jump to be super sonic. Be careful to not run out of rings or else you will change into Sonic again. The rings start dissapearing when you are Super sonic.
Contributed By: Tails_.
First, enable the level select cheat and the debug mode which are available here. For this to work, you must choose Sonic and Tails as the players.
After entering the codes, choose any stage from the level select menu(preferrably stage 1)
As soon as you can move Sonic, hold down, and press C(don't let go of down on the D-pad). This will activate Sonic's spin; Tails will copy the Sonic spin also.
Press the B button and Sonic will become the Debug cursor.(Tails will be locked in the sonic spin move).
Press A until you(the debug cursor), displays an enemy sprite, like the monkey or that bee robot. Now that the debug cursor displays an enemy sprite, move the debug cursor to where Tails is, and repeatedly tap C.
This will produce enemies where Tails is, and since Tails is locked in the sonic spin move, he will destroy the enemies. As Tails destroys enemies in this position, press C more until the score for destroying an enemy increases from 100 to 8000 to a 1up. Once you have enough 1ups, press B again to revert to Sonic.
Contributed By: JGuardiano.
Sonic the Hedgehog 3 Cheats
When the "SEGA" screen fades, quickly press Up-up-down-down-up-up-up-up. If you have done this right, you should be able to scroll down to "Sound Test" below "Competition". The ups and downs are very difficult in the short amount of time provided, but with practice, it is pretty easy.
Contributed By: Houston_dude.
Enter the following code in any stage while Debug Mode is entered
Effect Code Your character will show you all of his sprite animations Hold B and press C Your character will stop the sprite show if it is activated Hold B and press C again
Contributed By: Numbuh 128bit.
Sonic and Knuckles Mini-Boss Music
Make your way to the end of Act 1 of Hydrocity Zone (Zone 2). When facing the mini-boss, keep yourself underwater until the water warning music plays. Then jump out of the water.
The game should now be playing the mini-boss music from Sonic and Knuckles, which wasn't out at the time (the music was evidently included in Sonic 3 to make the backwards compatibility feature easier).
Contributed By: GregHead.
Walk Thru Walls
In the Icecap Zone Act 1, when you come to a wall that only Knuckles can bust through, Hold the Down button until sonic or tails looks down, and the screen pans all the way down. Then Press up and jump at the same time. The screen will start to rotate, walk in the direction of the wall and you will walk right thru it. This only works on Act 1 of The Icecap Zone.
Contributed By: havac.
Unlock Super Sonic
Collect all 7 chaos emeralds to unlock the ability to become Super Sonic on the save file with them all collected. To transform, have 50 rings and press A, B, or C while in mid-air after jumping.
Unlockable How to Unlock Super Sonic Collect all of the chaos emeralds
Contributed By: DeepFriedBurger.
Manage to beat a stage at with your time at exactly 9:59 and you'll net yourself an easy 100000 points.
Contributed By: Juggling Joker.
Frame by frame
When playing a level after enabling the level select cheat, pause the game, then press the C button to advance the game by one frame.
Hidden Special Stage
On the level select menu, play sounds 01, 03, 05, 07. Highlight Special Stage 2 and press A + Start.
Contributed By: hivebrain.
Get up to Launch Base Zone. Sound any of the alarms, so that the Kamikaze birds come after you. Charge up a Super Sonic Dash in between the alarm, but do not let go of the button. The birds will continually crash into you. After about 30 seconds, you will have gained enough points to get an extra life. Continue the process for as many lives as you want.
Contributed By: stonedwal.
Slow motion mode.
When playing any level which you have accesed using the cheat menu , pause the game and hold down B. Whilst B is held down , the game will play in slow motion mode.
Contributed By: CalmG.
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