Note: This procedure involves editing a game file; create a backup copy of the
file before proceeding. Use a text editor to edit the "sonic.ini" file in the
"windows" directory. Add the following line to the file:
Start up the game and two new menus will appear. The "Stage" menu will allow
any stage (including Special Stage 8) to be selected. The "FUNC" menu has the
ability to turn on debug mode, turn off the special stage timer, record and
play a demo, and uncheck the MMTimer option to place the game in turbo mode.
Press Up, Down, Down, Left, Right, [Space] at the title screen. Note: Only a
single level may be completed with this feature enabled.
Development team high scores:
Press Right, Right, Up, Up, Down, [Space] at the title screen.
Press Down, Down, Down, Left, Right, [Space] at the title screen to enable the
sound test screen and chat mode. Enter and play one of the corresponding sound
combinations to activate the corresponding cheat function.
Debug mode PCM12, DA11
Bonus levels PCM07, DA07
Display artwork PCM03, DA01
Human-faced Sonic PCM12, DA25
Hercules Sonic PCM04, DA21
"Revenge of the Mutant Artwork" PCM11, DA09