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SONIC THE HEDGEHOG AND KNUCKLES
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 LEVEL SELECT:
 Start a game with Sonic. Run over to where the Super Shoes power-up and Madmole
 creature are right next to each other. Directly to the right of the Madmole is
 a pulley mechanism that takes you to the next level above by pushing Down on it
 repeatedly. Grab a hold of its left handle, but instead of pushing DOWN, push
 the follow sequence while on it: LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, UP, UP,
 UP. The sound of a chime will confirm correct code entry. After hearing the
 chime, press START to pause game play, then press B. You will be sent back to
 the Sega logo and title screen. Wait for the introduction sequence to end, then
 when the selection for choosing Sonic or Knuckles appears, press START while
 holding B.


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SONIC THE HEDGEHOG 2 AND KNUCKLES
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 LEVEL SELECT:
 Press UP, UP, UP, DOWN, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT at the "Knuckles
 in Sonic 2" title screen. When the chime signal sounds, hold B and press START.

 DEBUG MODE:
 Enter the "Sound Test" screen. Choose sounds 1, 9, 9, 4, 1, 0, 1, 8 in that
 order. Highlight a level, then press A + START.

 ALL CHAOS EMERALDS:
 Enter the "Sound Test" screen. Choose sounds 1, 6, 7, 7, 7, 2, 1, 6 in that
 order.


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SONIC THE HEDGEHOG 3 AND KNUCKLES
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Go into "Sonic The Hedgehog", "Sonic The Hedgehog 2", "Sonic The Hedgehog 3" and
"Sonic And Knuckles" and exit repeatedly until you see that the game log
recording message is gone. When all gamelogs for "Sonic The Hedgehog 1" through
"3" and "Sonic And Knuckles" are gone, "Sonic The Hedgehog 3 And Knuckles" will
be unlocked.

 SOUND TEST AND LEVEL SELECT:
 Begin game play at Angel Island Zone Act 1. Grab one of the swings that you
 hang on, then press LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, UP, UP, UP while
 Sonic is swinging. A sound will confirm correct code entry. Pause game play and
 press A to return to the title screen. Press DOWN, DOWN to access the sound
 test option. Select that option to play any sound or choose any level.

 DEBUG MODE:
 Unlock the "sound test and level select". Go to level selection screen and
 choose Mushroom Hill Act 1. Then, find something to hang on (such as a pulley)
 and press LEFT, LEFT, LEFT, RIGHT, RIGHT, RIGHT, UP, UP, UP. The sound of a
 ring will confirm correct code entry. Press Start, then B. Once you are at the
 main menu, go to the level selection screen and choose any level. Note: Instead
 of pressing Start to start the level, hold B and press Start. Once you are in
 the level, debug mode should be active. Press X to jump, B to switch gravity,
 and A to access item spawning mode. While in spawning mode, press A to switch
 back to normal mode, B to switch the item, and X to spawns the selected item.

 SUPER SONIC:
 To become Super Sonic, enter debug mode and spawn a monitor. The monitor will
 have an "S" on it. Break it open to become Super Sonic.

 SUPER TAILS OR SUPER KNUCKLES:
 Enable the "Debug" code, go to any level with Tails or Knuckles, and create the
 monitor with the "S" on it. Break it open and you will become Super Tails or
 Super Knuckles. Each super character has different features, the most
 interesting being Tails, who has birds that will destroy an opponent for you.

 VERY FAST TRICKS:
 While in Super Sonic, Tails, or Knuckles form, press X + A.