Sonic Mega Collection GameCube Cheats

 
Gamecube
Get Every Emerald in Knuckles in Sonic 2:
At the sount test, play these tracks in order: 01, 06, 07, 07, 07, 02, 01, 06.
Debug Mode in Knuckles in Sonic 2:
At the sount test, play these tracks in order: 01, 09, 09, 04, 01, 00, 01, 08. When you select a level, hold the A button and hit START.
Change from Widescreen to Fullscreen View:
Press R3.
Get Comic Zone and The Ooze mini games:
Get any save file on Sonic Heroes and then play Sonic Mega Collection Plus.
To unlock these mini-games, you simply have to start the various normal games a certain number of times. See the SEGA screen then press R1 and Quit after getting to the specific game:
Flicky mini-game: 
Enter Dr. Robotnik's Mean Bean Machine 50 times.
Blue Spheres mini-game:
Enter Sonic the Hedgehog and Sonic 3D Blast 20 times each.
Play Knuckles in Sonic 2:
Enter Sonic Spinball and Sonic 2 50 times each.
Comix Zone:
Exit all Sega games 50 times.
Sonic 3 & Knuckles:
Play Sonic the Hedgehog 3 and Sonic & Knuckles 20 times each.
Ristar:
Play Blue Sphere, Knuckles in Sonic 2, Sonic 3 and Knuckles, and Flicky 30 times each.
Ristar Codes. Enter them at the Options Menu, in The Passwords Menu:

Blue Spheres Level Select:

Dr. Robotnik's Mean Bean Machine Level Select:

Sonic The Hedgehog - Cheat mode:
At the Sonic The Hedgehog title screen, press Up, Down, Left, Right. Hold B for level select and sound test.

Sonic The Hedgehog - Debug mode:
At the Sonic The Hedgehog title screen, press Up, X, Down, X, Left, X, Right, Up, X, Down, X, Left, X, Right, X, Now hold B and press Start. Press A to enter debug mode.

Sonic The Hedgehog 2 - Level select:
Go to Sound Test option. Choose sounds 19, 65, 9, and 17. Hold X and press Start to return to the title screen, then hold B and press Start to access the level select menu.

Sonic The Hedgehog 2 - Super Sonic:
Enable the "Level select" code and go to Sound Test option. Choose sounds 4, 1, 2, 6. Start a stage, collect 50 rings, then jump to transform into Super Sonic.

Sonic The Hedgehog 2 - Debug mode:
Enable the "Level select" code and go to Sound Test option. Choose sounds 1, 9, 9, 2, 1, 1, 2, 4. Select any starting level, then hold B + Start until play begins. Screen coordinates will appear instead of a score and the number of objects displayed will appear instead of the time remaining. To edit the level, press the button configured as B on the Genesis. Sonic should become an object somewhere on the level. Press the button configured as C to "paste" that object in the level. Press the button configured as B again to resume game play.

Sonic and Knuckles - Level select:
Start a game with Sonic and run over to the Madmole near the Super Shoes power-up. Directly to the right of the Madmole is a pulley mechanism that takes you to the next level above by pushing Down on it. Instead of pushing down, push the Left, Left, Left, Right, Right, Right, Up, Up, Up. Now press Start to pause the game and press B. You will be sent back to the main screen. When you can select between Sonic and Knuckles, hold B and press Start for a level select.
Sonic The Hedgehog 2 And Knuckles - Level select:
At the Sonic The Hedgehog 2 title screen, press Up, Up, Up, Down, Down, Down, Left, Right, Left, Right, press and hold B, and then press Start. A stage select screen will appear.

Sonic Spinball - Level select:
At the Main Menu, select Options. Now at the Options screen, press A, Down, B, Down, X, Down, A, B, Up, A, X, Up, B, X, Up. You should hear a sound to confirm. Return to the main menu and then enter the following codes to unlock the corresponding level.
Level 2: Hold A and press Start
Level 3: Hold B and press Start
Level 4: Hold X and press Start

Sonic 3D Blast - Level Select:
When "Press Start" appears on the Sonic 3D Blast title screen, press B, A, Right, A, X, Up, Down, A, Start.

Unlock Flicky Bonus Game:
Insert a memory card with a save file for Sonic Adventure 2 Battle, and Flicky will be available at the Games menu.

Thanks to Revolution readers Joseph, Rsayo, Jen Farrows, tuxx, Kintama, Mecha, Beatleguise, Drew, and Martin Brodeur!