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Sonic the Hedgehog
Sonic the Hedgehog 2
Sonic the Hedgehog 3
Sonic & Knuckles
Sonic Spin
Sonic 3D Blast

If you have any codes we don't have here, be sure to E-mail me at Knuckles Echidna with: The Game & System title & your real name (or nickname).

Bonus Points
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

Debug Mode
To enter Debug Mode, play these sounds from the level select screen: 1, 9, 9, 2, 1, 1, 2, 4. Press Start and hold A.

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.

Easy Chaos Emeralds
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.

Emerald Hill Music
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!

Emerald Hill Shortcut
To breeze through Emerald Hill 1 and 2, connect Sonic & Knuckles with Sonic 2 and play as Knuckles. Climb as high as you can and glide to the right. You'll reach the end of the level in seconds!

Extra Lives in the Chemical Plant
If you have Sonic & Knuckles, hook it onto Sonic 2. Play until Chemical Plant Act 1. When you get to the wall with the Spiny badnik and the warp tube on the floor. Break open the tube and go through it. When you come out you will see a Ring Box next to a tower. Climb up the tower and on the top you will find one 1-up. Glide left and you will find another 1-up. Glide to the left one more time and you will find yet one more 1-up. Since you won't want to go through the level again just glide to the right until you get to the tower you started from. Get on that first tower and glide to the right. The Act will be over and you will have 3 lives more that how much you started the act with.

Green Sonic Glitch
To get green sonic you must enter the level select and debug code. Then you must choose one of the emerald hill zone levels because the code only works in emerald hill zone (1 or 2.) When you start the level press B, you will be a ring,then press a four times,you will be four rings in a row going up or down,you then hold c and right for about 5 seconds,then you go back to the begining, keep pressing a until your the top of a waterfall. You may not see yourself but you're there. Now do the same thing as before, hold c and right for about five seconds. Then press b and you'll be green.

Level Select
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.

More Continues
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.

No Boss Music Glitch
Enter the level select code and go to a boss. Next push start then push and hold B. You should be playing in slow motion. When the boss enters the screen get a hit on the boss then let go of B and the screen should be paused. Then press start and there should be no boss music.

Oil Ocean Music
Here's a way to play the Oil Ocean music through the whole game. Go to the OPTIONS screen and enter sounds 1, 9, 9, 2, 1, 1, 2, 4. You should hear the Oil Ocean music. Next, hold A + Start and you should return to the SEGA screen with the Oil Ocean music still playing.

Play at Night
To play at night, enter the Debug code, then hold C and press Start to begin a level.

Shielded Tails
To give tails a sheild, enter debug mode and hit a shield. Then place a teleport box down and hit that. Now tails has a permenant sheild.

Slow Motion
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.

Super Sonic
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.

Super Tails
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.

Tails/Miles Mode
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.
submitted by Bo Bayles and

Two Tails
Enter the level select and debug codes, then go to the Sky Chase level. Using debug mode, create a transfer box and break it open. When you hear Sonic die press B to enter debug mode again. Move the cursor up until you see Tails and exit debug mode. To finish, jump and you'll have two Tails.

Wing Fortress Shortcut
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.