Sega Genesis.. Mega Drive
Genesis is the US name for the console and MegaDrive the Euro name..
Sonic the Hedgehog 3

Walkthroughs and Guides
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After the Sega logo fades and Sonic starts to appear, and before the screen flashes white, quickly press:
Up, Up, Down, Down, Up, Up, Up, Up
You will hear a sound to confirm.
Highlight the sound test option on the title screen and press Start.
Pause game play and press A to restart, B for slow motion, and C for frame advance.

Once the Level select cheat has been enabled you can enter the cheats below:

Bonus stage: Enable the Level select cheat. Enter the sound test screen and play song 01 and 0F.Highlight level 2, hold A and press Start.
Random start: Enable the Level select cheat. Select a level and begin game play. Pause game play and press A to return to the level selection menu. Choose another level to resume start in a different area. Note: Sonic may resume game play inside an object and crash the game.
All chaos emeralds: Enable the Level select cheat. Highlight the "Special Stage" level and press C + Start. Collect the emerald, press A + Start, and repeat the procedure to collect all the emeralds.
Night game: Enable the Level select cheat. Highlight a level and press C + Start.
View animations: Enable the Level select cheat. Press B + C.


Set off the first alarm on the first level of the Launch Base Zone.
Wait in the middle of the alarm and perform Spin-Dash attacks on the Flybots.
The value of the Flybots will eventually increase to 10,000 points as they continue to attack. Accumulate points and lives at this location.

Submitted by: Aziz K

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*Please note: In the US and some other regions this system is known as the Sega Genesis. In other regions, including Japan and Europe, the console is known as the Sega Mega Drive.