Submitted by: bourbon street
Secret Stage mode:
After complete all seven special stages, return to the main menu and
press Up, L, Down, R, Right, Left. Play as Amy:
Start a new game and successfully complete all three Acts of Toy
Kingdom Zone to unlock Amy.
Play as Cream:
Start a new game and successfully complete all three Acts of Cyber
Track Zone to unlock Cream.
Play as Knuckles:
Start a new game and successfully complete all three Acts of Sunset
Hill Zone to unlock Knuckles.
Successfully complete the game. You do not need all the Chaos Emeralds.
The “Sound Test” option will appear just above “Delete Game Data” in
the options menu.
Boss time attack:
Successfully completed the game. Do not have all Emeralds but have a
Golden Ring in all stages (Act 1, 2, 3 and vs. Boss).
Change color settings:
At the “Press Start” screen, press R. In the upper right corner, the
game will display the color setting that you are currently on. Press
R again to change the color settings. There are three color setting:
“Game Boy Advance”, “Game Boy Advance SP”, and “Game Boy Player”.
The color settings optimize the color for the system that you are using.
Have Tails as your partner. If you missed an elevated platform or area
during a level, use Tails′ Tag action on the ground. About 95% of the
time you will be able to reach what you fell off from. Note: This can
also be done to access certain areas of the Act faster.
Eggman as partner:
After collecting all the Emeralds, play the “Final Boss level” with
Sonic as the leader and anyone else as your partner. Once you change
to Super Sonic, Dr. Eggman will become your partner in order to help
you defeat the final Boss.
Play as Knuckles and Tails. Have Knuckles as your lead and when you
face Eggman, use Knuckles’ glide. Having Tails as your partner will
give Knuckles more elevation on his glide, allowing you to hit Eggman’s
weak spot without any elevation help from the hands or the balls that
Sonic The Hedgehog reference:
In Zone 2, Sunset Hill, the music that plays is a remix of Green Hill
Zone from Sonic The Hedgehog.
Secret Stage Mode:
Complete all 7 special stages, then, on the main menu, press Up, R, Down,
L, Right, Left
Beat the final zone