CheatCodes.com has all the official Sonic Classic Collection DS cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Tuesday May 21, 2013 for Sonic Classic Collection are shown below.
In Zone 1 (The Mushroom Hill), go up to any of the pulleys (pull up machine) and hang from it, and press LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, UP, UP, UP. If you enter it correctly, you'll hear a chime.
At the title screen, hold A then press Up, Down, Left, Right. When you hear the chime, press Start. If that doesn't work, try this: at the title screen, press Up, Down, Left, Right, hold A, and press Start. After doing this once, you only need to hold Start + A to enter the level select.
For extra points, pass any zone in a certain amount of time. For the best bonus, enter the Debug Mode code. The clock will freeze and you'll always score a 50,000 bonus!
Time Points 0:30 50,000 0:45 10,000 1:00 5,000 1:30 4,000 2:00 3,000 3:00 2,000 4:00 1,000 5:00 500
While the demo is playing, hold A + B + C. Sonic will get confused, lose his place, and possibly die.
At the title screen, press Up, C, Down, C, Left, C, Right. While playing, you can pause the game and use A to restart, B for slow motion, and C for frame advance.
Enable Control Mode. After pressing Start to begin a game, hold A until you see Sonic. If you see a bunch of hex numbers on the top of the screen, you're in Debug Mode. To start debugging, press B, then you can select any sprite in that level and put it on the screen. To select a different sprite, press A, and to place it on the screen, press C. Note that sprite selection is different from Zone to Zone. Also, instead of displaying the time elapsed, it displays the number of sprites currently on the screen. Control Mode functions work as well.
This cheat allows you to start at the First Level with all the Emeralds, and with lots of Continues. Use the Level Select cheat (see above) to get to the Special Zone. When you get the Emerald, and have entered into the First Zone, press Reset. Use the Level Select cheat to get to the Special Zone again. When you get the next Emerald, and have entered the First Zone, press Reset again. When you have all the Emeralds, continue on with the first level. You get to keep the Emeralds and the Continues accumulated so far.
On the last level (Scrap Brain), find the ledges that move right then left. Go to the left side of the wall and wait for the platform to move. As soon as it starts to move left, duck. You'll go through the wall. While here, press Left to teleport right and Right to teleport to the left.
On the last level (Scrap Brain), find the ledges that move right then left. Go to the left side of the wall and wait for the platform to move. As soon as it starts to move left, duck. You'll go through the wall. While here, press Left to teleport right and Right to teleport to the left.
This code requires a Sonic 2 cartridge. Insert Sonic 2 and enter the Sonic 2 Level Select (play sounds 19, 65, 09, and 17). Return to the title screen, hold A and press Start. To transfer this to Sonic 3, hold A and carefully remove the cartridge without turning off the Genesis. Insert Sonic 3 and press Reset. Finally, release A and press Down twice at the main menu. You might notice a few levels you haven't seen before, but you can't select them. Those levels were originally intended for the game, but were pulled in order to release the game on time.
Enter the Level Select code, then press C + Start to choose your starting level.
Enter the sound test menu choose a level. Look for a star post, touch it and hold A and press START. Then choose another level. If done correctly the title of the zone will change. Beware you might start out in a wall so use debug mode to fly out.
For a bonus stage, enable Level Select, then play tune 1F. Finally, highlight stage 2 and hold A while pressing Start.
First enable Level Select. While playing, you can pause the game and press A to restart, B for slow motion, and C for frame advance.
To become Super Sonic without getting all the Chaos Emeralds, first enable the level select and debug mode. When the game begins, create a power-up box. There should be an 'S' on the box. Jump on it to grab 50 rings and become Super Sonic!
Enable Level Select, then press Down to make sure you have the sound test (don't select it yet). Start a one-player game and choose Tails in the Data Select screen. When the timer appears, press RESET.
Enter the Sound Test menu and choose any zone. Hold A and press Start. You should be Tails and be in debug mode. From here press B, then press A until you see a box. Press C to select it, then press B to return to Tails.
To enable Super Tails, jump on the box. Tails will look weird and can not be hurt or lose any rings. He can still get squashed and drowned, though, so be careful in the Ice Cap zone. You will have do this at the beginning of each zone. Robotnik can hurt him at the very end of Launch Base zone-act 2.
Enter the Sonic 3 Level Select code, then highlight the "2P Vs" option and press START. You will enter a series of bonus stages that last until you reset the system or press A+START.
Enter Debug Mode and press B + C. You'll be treated to a view of Sonic and Tail's moves.
Use the Debug Mode code in Launch Base act 2. Beat the game. When Sonic or Tails jumps towards you, activate Debug Mode and get out of it immediately. You will be able to use Sonic or Tails in the background for a short time, but they will look like robots.
From the main screen, select Options. Select Sound Select and play sounds 19, 65, 9, 17, then push C. Press Start to return to the main screen, and when Sonic and Tails appear, hold A and press Start.
First enable the level select. Then, at the options screen, play these sounds in this order: 1, 1, 2, 4. Now move the highlight to the "Player Select" field of the options screen and press Start.
To play at night, enter the Debug code, then hold C and press Start to begin a level.
To give tails a shield, enter debug mode and hit a shield.Then place a teleport box down and hit that. Now tails has a permanent shield.
First enable Level Select. While playing, you can pause the game and use A to restart, B for slow motion, and C for frame advance.
To become Super Sonic without getting all the Chaos Emeralds, first enable the level select. At the level select menu, go to the sound test item, and play sounds in this order: 4, 1, 2, 6. You should hear the music you get when you win a chaos emerald. Now select any level, get 50 rings, and jump.
While in Debug Mode, create and position a "Transfer Box" monitor. When you hit it and you are Super Sonic, you lose all your powers but stay yellow. Tails looks the same but has invincibility (little stars flashing around him.)
To regain Super Sonic, let yourself get hit, then turn into a ring (press B) and place at least 50 rings on Tails. Exit debug mode (press B) and jump to become Super Sonic with Super Tails as a follower.
In Wing Fortress, go as far as you can to the right without climbing. Make sure you have some rings. When you see blades blocking your way, go ahead and hit them. As soon as you are invincible, walk through them. Jump on the platforms to the right and half the level will be finished.
At the title screen press Up, Up, Up, Down, Down, Down, Up or Up, Up, Down, Down, Up, Up, Up, Up. A chime will sound and Tails will be called Miles or vice versa.
Go to the "Level Select" screen and play tunes 1, 9, 9, 4, 1, 0, 1, 8 (the date when the game was originally made.) Choose any level, then hold A and press Start to activate Debug mode. To use it, see the instructions in Sonic the Hedgehog.
Go to Angel Island Zone and when you are on a vine, press LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, UP, UP, UP. You will here a chime if you did it correctly. Then press Start then A. At the Title Screen, scroll down to Sound Test and press Start.
Enter the LEVEL SELECT code. Go to "special stage" and get an emerald. You will go to Emerald Hill Zone. Pause the game, and press A. Enter the level select again and return to the special stage. Repeat this process until you have all the emeralds.
Connect your Sonic and Knuckles cartridge to Sonic 3. Activate the LEVEL SELECT and Debug. When you enter debug mode, create a monitor. It will have an "S" on it. Jump on it to get 50 rings and become Hyper Sonic, Hyper Knuckles, or Super Tails!
Start the Mushroom Hill level as Sonic. Run to the right until you come to the first Pull-Up machine. (It's just after the box with the power sneakers and the Madmole.) Hang from it and press LEFT, LEFT, LEFT, right right right, up up up. You should hear a ring sound. Pause the game and press A to reset to the title screen. Now hold A and press start for LEVEL SELECT.
At the TITLE screen, press Up, Up, Up, Down, Down, Down, Left, Right, Left, Right. You should hear a chime if you did it correctly. Next, press A + Start to enter the Stage Select screen. This code will remain in effect until you turn off the Genesis.
First off, do the regular Sonic and Knuckles Level Select. Once that is done, hold UP + A, then put Sonic 3 in and reset the game. When you get to the Sonic 3 and Knuckles menu you'll find that Sound Test is there.
Start the game as you normally would. Get a Chaos Emerald, reset the game, and start the game from the options menu. You will keep the emeralds you have gained so far each time you start from the options menu.
To hear the Emerald Hill melody (at the title screen) go to sound test selection in the Options menu and listen to songs 1, 1, 2 and 4. Then highlight Player Select and press start. You will hear Oil Ocean at the beginning of the first level. Reset the game, and you will hear Emerald Hill!
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