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Make sure you save after each session to ensure that the total number of hours are logged and enter: ADE7 AA2A 51A6 6D12

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When examining an illustration in the Museum, press X. You should hear a sound. A slideshow will start featuring all the pictures you've unlocked so far. It'll skip over:

Non-pictures (videos, demos, etc.)
Pictures still marked as NEW
Pictures you haven't unlocked

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To get a Game Over without dying, don't let Sonic move, jump, ect. for 3 minutes, then Sonic will say "I'm outta here", and you will get a game over.

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Enter the code at the Title Screen

Stage Select Up, Down, Down, Left, Right, A
Sound Test Down, Down, Down, Left, Right, A
High Scores Right, Right, Up, Up, Down, A

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Enter these numbers in the sound test mode for the corresponding effect:

Play a secret special stage - PM 07 DA 07
View a Japanese message with a human-like Sonic in the background - PM 12 DA 25
View artwork of Sonic, Metal Sonic, and Robotnik "DJ'ing" - PM 03 DA 01
Picture of a Superhero-like Sonic - PM 04 DA 21
Picture of a "cute" Sonic - PM 11 DA 09
View a picture of Tails next to a green car. After this, start the game and you will be in debug mode. - PM 12 DA 11

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If you have Radiant Emerald and Super Sonic unlocked, just select Super Sonic and play as him in Radiant Emerald to hear him theme song, Super Sonic Racer, instead of Diamond in The Sky.

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Select Sonic as your character in single player, and fight your way through the 8 battles without losing a single round (that means no losing the match and starting over from round 1). Defeat Metal Sonic in stage 9 in round 1. In round 2, activate Hyper mode (back+punch+kick) and Sonic will transform into Super Sonic, making him invulnerable for the rest of the game.

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To unlock the a set of artwork, do the following task.

Sonic CD Artwork Set 1 - Play The Game 5 times
Sonic CD Artwork Set 2 - Play The Game 10 times
Sonic CD Artwork Set 3 - Play Sonic CD over 60 minutes
Sonic CD Artwork Set 4 - Play Sonic CD over 120 Minutes
Sonic Vs. Metal Sonic Sonic Screensaver Artwork - Beat Sonic CD with any ending
Sonic The Fighters Artwork Set 1 - Play Fighters 5 times
Sonic The Fighters Artwork Set 2 - Play Fighters 10 Times
Sonic The Fighters Artwork Set 3 - Play Fighters over 60 minutes
Sonic The Fighters Artwork Set 4 - Play Fighters over 120 minutes
Sonic Championship logo Beat Fighters with any character
Sonic R Artwork Set 1 - Play Sonic R 5 times
Sonic R Artwork Set 2 - Play Sonic R 10 Times
Sonic R Artwork Set 3 - Play Sonic R over 60 minutes
Sonic R Artwork Set 4 - Play Sonic R over 120 minutes
Sonic Adventure DX Artwork Set 1 - Play Sonic Spinball 5 times
Sonic Adventure DX Artwork Set 2 - Play Sonic Spinball 10 times
Sonic Adventure DX Artwork Set 3 - Play Sonic Spinball over 60 minutes
Sonic Adventure DX Artwork Set 4 - Play Sonic Spinball over 120 minutes
Sonic Heroes Movies Artwork Set 1 - Play Tails Adventure 5 times
Sonic Heroes Movie Artwork Set 2 - Play Tails Adventure 10 Times
Sonic Heroes Movie Artwork Set 3 - Play Tails Adventure over 70 minutes

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Make sure you save after each session to ensure that the total number of hours are logged:

Vectorman
Play the collection for a total of 5 hours.

Vectorman 2
Play the collection for a total of 7 hours and play Vectorman once

Vectorman
Have a Sonic Heroes save file on your memory card

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Pause the game and enter the code.

A, B, Left, Left - Display Map Coordinates
A, B, Left, Down - Display Map Coordinates
Left, Up, B, Up - Display Map Coordinates
Right, Up, A, B, Down, Up, A, Down, Up, A - Extra Life
Up, Right, B, A, B, Down, Left, B, Down - Level Select/Sound Test
X, B, Left, Left, Down, B, Down - New Weapons
A, B, A, B, Left, Up, Up - Refill Life Meter

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Pause the game and enter the code.

Taxi Mode - X, B, Left, Left, B, X, B, A
Refill Life Meter - B, A, Right, B, X, B, Down, B, A, Right, B
Slow Motion - Down, Right, B, X, Up, Left, B

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Enter this code at the options menu. You should be taken to a new section of the options menu that'll let have access to any level, choose how much health and lives you have and lets you choose which powerup weapon to start with. Only downside is you can't see the good ending if you use it.

Stage Select - B, A, A, B, Down, B, A, A, B

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Enter this code at the options menu. You should be taken to a new section of the options menu that'll let have access to any level, choose how much health and lives you have and lets you choose which powerup weapon to start with. Only downside is you can't see the good ending if you use it.

Stage Select - B, A, A, B, Down, B, A, A, B

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