Cheats
Sonic The Hedgehog (mega-drive)
DUBUG
When Sonic is waving his finger press up, C, down, C, left, C, right, C, and then hold A and press Start at the same time.
To turn into a sprite press B, to select a different sprite press A, and to place it on the screen press C.
Level Select
When Sonic is waving his finger press up, down, left, right, then hold
down A and start at the same time
Sonic The Hedgehog 2 (mega-drive)
Level Select
Go to options and then go to Sound Test and play 19, 65, 09, and then 17. Press Start and the Mega-Drive will reset.
Hold down A and go into a regular one player game.
Debug
On the level select screen play 1, 9, 9, 2, 1, 1, 2, and then 4. Highlight the level that you want
to go to and then press Start and A at the same time. Press B to be a sprite, C to place the sprite, and A to change the sprite.
Four Continues
First do the level select code and then on the options screen play 1, 1, 2, and then 4.
Move onto the character select and press Start.
Super Sonic
On the Level Select screen go to sound test and play 04, 01, 02, and 06. Go to any level, get 50 rings and then jump.
Sonic The Hedgehog 2 (Game Gear)
Level Select
When the Sega logo appears, hold Down-Left + 1 + 2 + Start. Continue holding these buttons until the intro screen appears and
a chime sounds three times. Release everything and press Start to display the level select menu. Use Up and Down to
select a level and press Button 2 to begin play.
Unlimited Lives
In Act 1 of the Sky High Zone, you can get unlimited lives. Here's how to do it. There are two 1-ups in this act.
To get to the first one, pass the bridge, jump over the two sets of spikes,
ignore the Ring Monitor and the spring. Finally, jump over one more set of spikes to
grab the 1-up. Next, go back and jump on the spring, then walk into the horizontal spring, which will roll you through the bricks.
You'll reach two more springs. Jump on the vertical spring, and you see another spring.
Jump on this one, and hold left on the directional pad until you see a patch of ground with Christmas trees in the background.
You'll then see another 1-up. Take it, let yourself die, and then repeat this process until you max out on lives.
Sonic The Hedgehog 3 (mega-drive)
Extra Lives
On the first level of the Launch Base Zone set off the first alarm.
Stop in the middle of it and do a spin dash (down and then A button).
Hold down and the flybots will attack and eventually they will be worth 10,000 points and for every five you'll get an extra life.
Level Select
This code is hard to do. As the screen fades black after the Sega logo press up,
up, down, down, up, and then up. Highlight competition and press down. The new levels are not in this version of Sonic 3.
Bonus Stage
On level select play 01 and 0F. Highlight stage 2 and hold A while pressing Start.
Debug
When choosing a level on level select press A and start at the same time.
When the game starts, press C to create an item, B to toggle between items, and A to select an item.
Super Sonic
On the debug mode create a power-up box. There should be an "S" on it.
Jump on it to grab 50 rings and become Super Sonic.