Press and hole 1 + 2 + 3 + 7 + 9 + Option when the ''Eye'' appears on the title screen
Set sound and music options
During game play pause and press A, B, or C.
Press and hold 1 + 5 + 9 at the title screen. The word ''Fight'' will confirm correct code entry. On the main menu there will now be an accessible turbo option.
Voice modem mode
At the title screen press 9, 1, 1. The word ''Awesome'' will confirm you entered the code correctly.
On the character selection screen, press the following buttons together on the phone pad to unlock the following characters:
Unlockable How to Unlock Carbon 1+4+7+9 together Guardian 1+3+5+8 together Shadow 1+2+3+8 together
Contributed By: RBXfromdashow.
Hidden Palace bonus level
At the background selection screen, press #.
Subway Passage bonus level
At the background selection screen, press *.
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