Sonic The Hedgehog [Mega-Play 01] (c) 1993 Sega.

>>> TECHNICAL DETAILS
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Sega Mega Play hardware
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 224 pixels
Screen refresh : 60.00 Hz
Palette colors : 96
Players : 2
Control : 8-way joystick
Buttons : 3

>>> TRIVIA
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Released 2 years after the original, this version can be considered as a reduced version :
* Stages : Green hill -> Spring year -> Starlight -> Scrap brain (1,2) -> Final zone.
* You have a limited amount of time per level (usually pretty tight, 1 minute is the easy setting for the first level, 35 seconds seems to be the hardest).
* Extra life boxes do nothing.
* Jumping into the special stage ring does nothing (no special stages).
* When you finish it sonic seems to have the 'you didn't get any emeralds' look despite there being no emeralds due to the lack of special stages.
Official Sega Mega-Play releases list :
[Mega-Play 01] Sonic The Hedgehog
[Mega-Play 02] Golden Axe II
[Mega-Play 03] Grand Slam - The Tennis Tournament
[Mega-Play 04] Tecmo World Cup
[Mega-Play 05] Streets Of Rage 2
[Mega-Play 06] Bio-Hazard Battle
[Mega-Play 07] Sonic The Hedgehog 2
[Mega-Play 08] ???
[Mega-Play 09] Shinobi III - Return of the Ninja Master
[Mega-Play 10] ???
[Mega-Play 11] Mazin Wars
[Mega-Play ??] Columns III - Revenge of Columns
[Mega-Play ??] Gunstar Heroes

>>> OTHER GAME RESOURCES
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Game's rom.
Machine's picture.