Catalogue of Arcade Emulation Software - the Absolute Reference

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Sonic The Hedgehog (Mega-Tech, set 1)

Sonic The Hedgehog (c) 1991 Sega.

Join Sonic the Hedgehog as he saves and frees his animal friends from Dr. Ivo Robotnik's evil scheme for world conquest.


Sega Mega-Tech hardware

Game ID : Mega-Tech No. 52

Main CPU : 68000 (@ 7.670442 Mhz), (2x) Z80 (@ 3.57954 Mhz)

Sound Chips : YM3438 (@ 7.670442 Mhz), (2x) SN76496 (@ 3.57954 Mhz)

Screen orientation : Horizontal

Video resolution : 320 x 416 pixels

Screen refresh : 60.00 Hz

Palette colors : 96

Players : 2

Control : 8-way joystick

Buttons : 3


Sonic The Hedgehog : Genesis of the Genesis'! Greatest hero 'Sonic the Hedgehog' was the premier character on the home system 'Sega Mega Drive'. It is said that because the Genesis was faster than other console systems at the time (and more importantly, faster than its chief competitor, the Nintendo Super Famicom), Sonic, a hedgehog whose lone weapon is his speed, was born.

Sonic replaced 'Alex Kidd', who was Sega's mascot prior to 1990.

The bonus stage scene was greatly inspired by Taito's "Cameltry".

MB (Milton Bradley) released a board games based on this video game (same name) : Just like the video game, the object is to collect the most rings and defeat Dr. Robotnik.


* Level Select : At the title screen, press Up, Down, Left, Right. You should hear a noise like a ring being collected. Then, hold A and press Start for a level select.

* 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).

* Debug Mode : Press Up, C, Down, C, Left, C, Right, C, Start, then hold A at the title screen. Continue to hold A until game play begins. Screen coordinates will appear instead of a score and the number of objects displayed will appear instead of the time remaining. Use one of the following buttons sequences to enable the corresponding debug code...

Object transformation : Press B during game play to change Sonic into a game object.

1) Press A to change into a new object.

2) Press C to place an object on the screen.

3) Press B again to revert back to Sonic (Note : The type of object that may be selectable will vary from level to level).

Invincibility : Sonic is, by default, invincible in debug mode (Note : Sonic can still drown, be crushed, fall and die, etc. He is only invincible to enemy attacks).

Slow motion : Pause game-play and hold B.

Restart : Pause game-play and press A.

Frame advance : Pause game-play and press C.

* Control Ending Sequence : Enable the 'Debug mode' code. Press B when Sonic is running with the animals at the end, then turn back into Sonic. You can nowcontrol yourself.


1. Sonic The Hedgehog (1991, Sega Mega Drive)

2. Sonic The Hedgehog 2 (1992, Sega Mega Drive)

3. Sonic The Hedgehog CD (1993, Sega Mega CD)

4. Sonic The Hedgehog 3 (1994, Sega Mega Drive)

5. Sonic and Knuckles (1994, Sega Mega Drive)

6. Knuckles' Chaotix (1995, Sega Mega Drive 32X)

7. Sonic Adventure (1999, Sega Dreamcast)

8. Sonic Adventure 2 (2001, Sega Dreamcast)

9. Sonic Adventure 2 - Battle (2001, Nintendo Gamecube)

10. Sonic Advance (2001, Nintendo Game Boy Advance)

11. Sonic Advance 2 (2002, Nintendo Game Boy Advance)

12. Sonic Adventure DX - Director's Cut (2003, Nintendo Gamecube)

13. Sonic N (2003, Nokia N-Gage)

14. Sonic Advance 3 (2004, Nintendo Game Boy Advance)

15. Sonic Heroes (2004, Nintendo Gamecube, Microsoft Xbox, Sony PlayStation 2)

16. Sonic Rush (2005, Nintendo DS)

17. Sonic The Hedgehog (2006, Microsoft XBox 360) (2007, Sony PlayStation 3 & PC)

18. Sonic and the Secret Rings (2007, Nintendo Wii)


Programmer : Yuji Naka

Staff : Naoto Oshima


* Consoles :

Sega Game Gear (1991)

Sega Master System (1991)

Sega Mega Drive (1991)

Sega Mega Drive (1995, "6-PAK")

SNK Neo-Geo Pocket Color (1999, "Sonic the Hedgehog - Pocket Adventure")

Sony PlayStation 2 (2006, "Genesis Collection")

Sony PSP (2006, "Genesis Collection")

Nintendo Game Boy Advance (2006, "Sonic the Hedgehog Genesis")

Nintendo Wii (2006, "Virtual Console")

* Others :

Mobile Phones (2005, Sonic Mobile)