All Working Sonic the Hedgehog Cheats - Sega Genesis

cheat description		size
GUIDE Nov. 29, 2006		15KB
GUIDE Nov. 29, 2006		6KB
GUIDE Nov. 29, 2006		12KB
GUIDE Nov. 29, 2006		22KB
GAME GENIE CODES Nov. 29, 2006		2KB

Level select
Press [Up], [Down], [Left], [Right] at the title screen. A chime will confirm correct code entry. Hold [A] + [Start] to begin game play.

All Chaos Emeralds
Enable the "Level select" code. Select the "Bonus level" option on the level selection screen. Obtain the Chaos Emerald, reset the game, and repeat the process until all of them are in your possession. Allow the game to continue after obtaining the last Chaos Emerald to start in the Green Hill Zone.

Note: When you collect all of the Emeralds, you will not become Super Sonic, but you will be practically invincible. Try the following. When you have no rings, get attacked by something. Sonic will fall back (as if he had a shield on him), but he will not die. However, Sonic will die if he falls off of the edge of something, sinks underwater, etc.

Pause game play and press [C]. Crazy Sonic
Hold [A] + [B] + [C] during demonstration mode for force Sonic to run into objects and act strangely. Note: This may also be done during the ending sequence after completing the Final Zone.

Unlimited lives
Collect the extra life at the very bottom of Green Hill Zone - Act 3. Accumulate 100 rings to obtain another extra life. Collect a third extra life located at the top of the loop-the-loop. Intentionally lose a life and repeat the process.

Defeating the first Boss
Hit him before he gets out his wrecking ball. While he swings the ball, jump (but do not hold it down) and hit him. Keep doing this until he is defeated.

Special Zone entrance
You can almost always have the Special Zone entrance open (the giant ring next to the sign at the end of level Acts 1 and 2) by not losing your rings. If you do lose your rings, when you pass a checkpoint, intentionally die, then continue through the level without losing any rings. This works about 80% of the time.

Get all the same color Emeralds
Enable the "Debug mode" code. While in Special Zone, transform into something then go as far left and down as possible until Sonic stops shaking. Turn back into Sonic. You will fall to a place which is spinning. Look around to find every different Emerald. Note: If you fall off this place, you will fall back to your original location. To prevent this, transform and repeat the process. This works in every Special Zone.

Glitch: Early unlimited lives
Enable "Level select" and "Debug mode" codes. Put a lamppost just before the sign at the end of the level. Press [B] to transform back into Sonic and hit the lamppost. Get out until the lives read "1" at the bottom of the screen. Spin the sign to end the level. Wait until Sonic walks out of the screen. Enter debug mode and go under the sign to get out again. The "Game Over" message will appear while the credits are being shown. You now have unlimited lives.