Time Attack mode options: Complete the game, then restart the game in "Time
Attack" mode. The following options will be available if
the "Time Attack" game can be completed within the corresponding
Music test Complete "Time Attack" mode within 37:27:57. A "D.A.
Garden" option will appear to the left of the "RAM Data"
option on the main menu. The Planet of Mobius will be displayed.
Hold B and use the D-pad to rotate the planet. Hold
C and use the D-pad to zoom in and out. Press A
to play the game music.
Play bonus levels Complete "Time Attack" mode within 30:21:05, then
press Left at the "Time Attack" screen.
View video sequences Complete "Time Attack" mode within 25:46:12. A "Visual
Mode" option will appear to the left of "D.A. Garden"
option on the main menu. Use this option to view the video sequences
in the game.
Programmer high scores: Press Right(2), Up(2), Down, C
at the title screen.
Level select: Press Up, Down(2), Left, Right,
B at the title screen while "Press Start" is
blinking. A sound will confirm correct code entry. Note: Only
one level may be played if this code is enabled.
Cloud change: Hold A and press Up, Down(4),
Up at the title screen while "Press Start" is
blinking. Use the D-pad on controller two to change the
appearance of the clouds and other effects.
Suicide: Pause game play and press A, B, or C.
Invisible Sonic: Move behind an object and press B.
Sound test mode options: Press Down(3), Left, Right, A
at the title screen while "Press Start" is blinking
to display the sound test menu. Set one of the following sound
combinations and press Start to enable the corresponding
FM07, PCM07, DA07
FM42, PCM03, DA01
DJ MC Sonic scene
FM46, PCM12, DA25
View hidden scene
FM42, PCM04, DA21
Batman Sonic scene
FM40, PCM12, DA11
Tails "See you next game" scene
FM44, PCM11, DA09
Freaky Sonic scene
Debug mode: Enable the "Sound test mode" code. Set the
options to PM12 and DA11. If done correctly you
should see a picture of Tails, and a sign that says "See
you next game". Hold B and choose "Play Game".
To change into a object, press A. To turn into your normal
self, press A again. Note: If you try to do this in time
attack mode, you will go through objects, meaning you cannot jump
on anything (springs, robots, spikes). Also, in a original game
you cannot put down a object that you turn into.
Information in this section was contributed by Quentin Boyd.
Enable the "Sound test mode" code. Set the options to
FM40, PCM12, DA11 and press Start.
A screen with Tails will appear. Begin game play, and press B
to change into an object, A to select another object, or
C to place the object on the screen. While debug mode is
enabled, the completion time for each level will be "0:00".
Bored ending: Allow Sonic to sit for three minutes without doing
anything. He will grow bored, say "I'm outa here!" and
race off the screen, thus ending the game.
Information in this section was contributed by Nik98bag.
Play your own music: You can play your own audio CDs while you play the
game. To do this, pause game play and eject the game disc from
the Sega CD tray. Replace the game disc with an audio CD. When
you close the cover, wait about four seconds for the console to
start the CD spinning. When you resume the game, you will hear
the music from the audio CD. If you complete a zone or lose all
of your lives, re-insert the game disc and it will pick up where
it left off. You can also use this trick with CD-Rs.
Information in this section was contributed by cuSchool.com.