The following cheats, codes, and secrets are available for Sonic Mega Collection on the Nintendo Gamecube video game console. Unlocking hidden games
When you initiate Sonic the Hedgehog 1, 2, 3, Sonic and Knuckles, Sonic 3D Blast, Dr. Robotnic's Mean Bean Machine, or Sonic Spinball screen states that it is logging the game data. That indicates the game is logging in that you have initiated that game once. After initiating a game fifty times, it no longer shows that game-logging screen. It stops the logging sequence screen from ever starting a game again and from then on, just starts the Genesis program itself. to unlock a hidden game, you must start a particular Mega Collection game fifty times, continually pressing Z to exit itn enter into the game repeatedly. Some hidden games do not necessarily require that you start up fifty times, but you eventually need to do so to unlock all the hidden games.
Invincibility
Press Attack on sounds 3, 12, 17, 2, 2, 10, 2, 7, 7, 11 at the jukebox screen. A voice will say "Oh Yeah" to confirm correct code entry.
Level select
Press Attack on sounds 14, 15, 18, 5, 13, 1, 3, 18, 15, 6 at the jukebox screen. A voice will say "Oh Yeah" to confirm correct code entry. Select the sound number that corresponds to desired level and press Attack.
Hidden moves:
Sketch fart
Defeat all enemies in a roomn repeatedly tap Down. Alternately, hold Down and attack an enemy.
Sega comment
Pause game play and wait until Sketch says "Sega".
Control title screen
Press A, B, X, or Left to control the beans on the title screen and make them jump.
Final stage
Enter Yellow, Has Bean, Blue, Blue (easy difficulty level) or Purple, Yellow, Has Bean, Clear (normal difficulty level) as a password.
Bonus picture
Complete rounds one through ten in under twenty seconds and receive a perfect score in each bonus round to accumulate over 240,000 points. A picture of a girl in a bikini will appear in the lower left corner of the screen.