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Sonic the Hedgehog (Game Gear prototype)/Comparisons

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General comparisons

Sonic 1 MS title.png
Master System version
Sonic 1 GGP Title.png
Game Gear prototype
S1GG sega screen.png
Game Gear final

There is no Sega logo in the prototype - the game jumps straight to the title screen like the Master System version.

Sonic1 SMS Comparison MapGHZ.png
Master System version
Sonic1GGProto GG Comparison MapGHZ.png
Game Gear prototype
Sonic1 GG Comparison MapGHZ.png
Game Gear final

The map screen uses similar colours to the Master System version, but the stage points are misplaced and the smoke is different.

Sonic1 SMS Comparison GameOver.png
Master System version
Sonic1GGProto GG Comparison GameOver.png
Game Gear prototype
Sonic1 GG Comparison GameOver.png
Game Gear final

The "Game Over" screen is corrupted.

Green Hill Zone

Sonic1 SMS Comparison GHZ Act1Start.png
Master System version
Sonic1GGProto GG Comparison GHZ Act1Start.png
Game Gear prototype
Sonic1 GG Comparison GHZ Act1Start.png
Game Gear final

Sonic starts in an odd position, slightly further ahead of two rings. Some of the new Game Gear scenery is in place (such as the sunflowers), but parts are still missing. Sonic is also still using graphics from the Master System version of the game. In the final, the character would be made slightly smaller to better suit the Game Gear's resolution (though no such provisions were made for future Master System-to-Game Gear conversions).

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Master System version
Sonic1GGProto GG Comparison GHZ Act1Glitch.png
Game Gear prototype
Sonic1 GG Comparison GHZ Act1Glitch.png
Game Gear final

Jump up and you'll find a strip of ground tiles graphics hovering in mid-air. This is thought to be a glitch from the porting process, and disappears after repeatedly moving the camera away from it. The camera is also less "rigid" in the prototype - Sonic has to move closer to the edge for the screen to start scrolling vertically in the final game.

Sonic1 SMS Comparison TotemPole.png
Master System version
Sonic1 GG Comparison Proto TotemPole.png
Game Gear prototype
Sonic1 GG Comparison Final TotemPole.png
Game Gear final

The developers are still playing with this totem pole. It's five "heads" high in the Master System and only two in the Game Gear final, but here it's three.

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Master System version
Sonic1GGProto GG Comparison GHZ Act1Mountain.png
Game Gear prototype
Sonic1 GG Comparison GHZ Act1Mountain.png
Game Gear final

The mountains in the background are still using Master System colours.

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Master System version
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Game Gear prototype
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Game Gear final

Master System-style invincibility stars are still being used.

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Master System version
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Game Gear prototype
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Game Gear final

Sonic changes colour when he nears the ending sign post.

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Master System version
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Game Gear prototype
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Game Gear final

Beat act 1 and you'll start from the beginning. That is, unless you hit the arrow monitor, in which case you'll be taken to the level's mid-point. This is a one-level demo of the game so no other stages can be accessed during normal play.

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Master System version
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Game Gear prototype
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Game Gear final


References


Sonic the Hedgehog (Game Gear prototype), prerelease version of Sonic the Hedgehog (8-bit)
Sonic 1 GGP Title.png

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Part of Sonic the Hedgehog (8-bit) development