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==General comparisons==
 
==General comparisons==
 
{{Comparison
 
{{Comparison
| image1=Notavailable.svg
+
| image1=Sonic2NA MD Comparison SegaLogo.png
| image2=Notavailable.svg
+
| image2=S1MD sega screen.png
| image3=Notavailable.svg
+
| image3=Sonic2 MD Comparison SegaLogo.png
 
| game1=''Sonic 2'' Nick Arcade prototype
 
| game1=''Sonic 2'' Nick Arcade prototype
 
| game2=''Sonic the Hedgehog''
 
| game2=''Sonic the Hedgehog''
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| desc=Start the game and you are introduced to the Sega logo from the original ''Sonic the Hedgehog'', as opposed to the revised variant in the final game.
 
| desc=Start the game and you are introduced to the Sega logo from the original ''Sonic the Hedgehog'', as opposed to the revised variant in the final game.
 
}}
 
}}
{{Comparison
+
<section begin="S2NATitleScreen" />{{Comparison
 
| image1=S2b title.png
 
| image1=S2b title.png
 
| image2=Sonic2 title.png
 
| image2=Sonic2 title.png
 
| game1=Nick Arcade prototype
 
| game1=Nick Arcade prototype
 
| game2=Final game
 
| game2=Final game
| desc=All early versions of ''Sonic 2'' use a different title screen. There is no introduction, Sonic and Tails are not animated, and the background is borrowed from [[Emerald Hill Zone]], scrolling to the left in a similar manner to the original ''Sonic the Hedgehog''. No menu system has been implemented by this point.
+
| desc=All early versions of ''Sonic 2'' use a different title screen. Sonic and Tails are not animated, and the background is borrowed from [[Emerald Hill Zone]], scrolling to the left in a similar manner to the original ''Sonic the Hedgehog''. No menu system has been implemented by this point.
}}
+
}}<section end="S2NATitleScreen" />
 
{{Comparison
 
{{Comparison
 
| image1=Ss.nas2bls.png
 
| image1=Ss.nas2bls.png
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| desc=Aside from the logo and palette, the level select screen hasn't changed at all from ''Sonic 1'', and is a far cry from ''Sonic 2''.
 
| desc=Aside from the logo and palette, the level select screen hasn't changed at all from ''Sonic 1'', and is a far cry from ''Sonic 2''.
 
}}
 
}}
 +
 +
==Gameplay comparisons==
 +
{{Comparison
 +
| image1=Sonic2NA MD Comparison CPZ TitleCard.png
 +
| image2=Sonic2 MD Comparison CPZ TitleCard.png
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=There are no title cards in this prototype for each of the zones. Instead, the game just fades from black, in a similar manner to the original ''Sonic the Hedgehog'' (which incidentally means fade in the red, then the green, then the blue, and don't touch Sonic (and Tails)).
 +
}}
 +
{{Comparison
 +
| image1=Sonic2NA MD Comparison ActEnd.png
 +
| image2=Sonic2 MD Comparison ActEnd.png
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=Likewise, there are no score tallies when completing a level, just a jingle.
 +
}}
 +
{{Comparison
 +
| image1=Notavailable.svg
 +
| image2=Notavailable.svg
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=The physics are still playing by ''Sonic 1'' rules. The land speed of Sonic and Tails is capped, meaning it is impossible to out-run the screen by normal means.
 +
}}
 +
{{Comparison
 +
| image1=Sonic2NA MD Comparison SpikeBug.png
 +
| image2=Sonic2 MD Comparison SpikeBug.png
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=The infamous "spike bug" from ''Sonic 1'' still exists. Land on spikes twice in succession and you will die instantly. In the final game, a grace period occurs, where Sonic and Tails will flash while standing on the set of spikes.
 +
}}
 +
{{Comparison
 +
| image1=Sonic2NA MD Comparison TailsSpikes.png
 +
| image2=Sonic2 MD Comparison TailsSpikes.png
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=Tails is invulnerable to spikes in the Nick Arcade prototype. This is the only known build where this is the case.
 +
}}
 +
{{Comparison
 +
| image1=Notavailable.svg
 +
| image2=Notavailable.svg
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=Sonic and Tails share a ring counter. This means, in addition to being able to pick up rings on Sonic's behalf, Tails can lose them.
 +
}}
 +
{{Comparison
 +
| image1=Notavailable.svg
 +
| image2=Notavailable.svg
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=The AI script powering Tails is in an incomplete stage. For now, Tails behaves exactly like Sonic, just with a slight delay. It's a convincing effect for the first few seconds, but typically leads to computer-controlled Tails getting stuck or lost. Tails also cannot fly, so if he wanders too far from view, he'll be abruptly dropped in from the top of the screen. In the final game, Tails attempts to follow Sonic, and while still often unsuccessful, he's not a liability like in these early prototypes.
 +
 +
In the case of the rolling demos, it is thought a second player was controlling Tails to ensure the results were aesthetically pleasing.
 +
}}
 +
{{Comparison
 +
| image1=Notavailable.svg
 +
| image2=Notavailable.svg
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=The spin dash cannot be "charged" in this prototype, meaning Sonic and Tails are always released at a set velocity. If spin dashing on a falling platform, the character will remain in the air rather than fall.
 +
}}
 +
{{Comparison
 +
| image1=Comp sms2protohit.gif
 +
| image2=Notavailable.svg
 +
| game1=Nick Arcade prototype
 +
| game2=Final game
 +
| desc=Run into a wall at high speed and Sonic will be thrust backwards, landing on his backside. This mechanic was removed from subsequent prototypes and has never been seen in a ''Sonic'' game since. It also only affects Sonic - Tails just stops when he hits a wall.
 +
}}
 +
 +
==Graphics comparisons==
 +
*[[Sonic the Hedgehog 2 (Nick Arcade prototype)/Comparisons/Graphics|General graphics]]
  
 
==Level comparisons==
 
==Level comparisons==
Line 39: Line 109:
 
<references />
 
<references />
  
{{S2MDOmni}}
+
{{S2NAOmni}}

Revision as of 17:20, 9 February 2021

Back to: Sonic the Hedgehog 2 (Nick Arcade prototype).

General comparisons

Sonic2NA MD Comparison SegaLogo.png
Sonic 2 Nick Arcade prototype
S1MD sega screen.png
Sonic the Hedgehog
Sonic2 MD Comparison SegaLogo.png
Sonic 2 final

Start the game and you are introduced to the Sega logo from the original Sonic the Hedgehog, as opposed to the revised variant in the final game.

S2b title.png
Nick Arcade prototype
Sonic2 title.png
Final game

All early versions of Sonic 2 use a different title screen. Sonic and Tails are not animated, and the background is borrowed from Emerald Hill Zone, scrolling to the left in a similar manner to the original Sonic the Hedgehog. No menu system has been implemented by this point.

Ss.nas2bls.png
Sonic 2 Nick Arcade prototype
Sonic1 MD LevelSelect REV01.png
Sonic the Hedgehog (REV01)
S2 level select.png
Sonic 2 final

Aside from the logo and palette, the level select screen hasn't changed at all from Sonic 1, and is a far cry from Sonic 2.

Gameplay comparisons

Sonic2NA MD Comparison CPZ TitleCard.png
Nick Arcade prototype
Sonic2 MD Comparison CPZ TitleCard.png
Final game

There are no title cards in this prototype for each of the zones. Instead, the game just fades from black, in a similar manner to the original Sonic the Hedgehog (which incidentally means fade in the red, then the green, then the blue, and don't touch Sonic (and Tails)).

Sonic2NA MD Comparison ActEnd.png
Nick Arcade prototype
Sonic2 MD Comparison ActEnd.png
Final game

Likewise, there are no score tallies when completing a level, just a jingle.

Notavailable.svg
Nick Arcade prototype
Notavailable.svg
Final game

The physics are still playing by Sonic 1 rules. The land speed of Sonic and Tails is capped, meaning it is impossible to out-run the screen by normal means.

Sonic2NA MD Comparison SpikeBug.png
Nick Arcade prototype
Sonic2 MD Comparison SpikeBug.png
Final game

The infamous "spike bug" from Sonic 1 still exists. Land on spikes twice in succession and you will die instantly. In the final game, a grace period occurs, where Sonic and Tails will flash while standing on the set of spikes.

Sonic2NA MD Comparison TailsSpikes.png
Nick Arcade prototype
Sonic2 MD Comparison TailsSpikes.png
Final game

Tails is invulnerable to spikes in the Nick Arcade prototype. This is the only known build where this is the case.

Notavailable.svg
Nick Arcade prototype
Notavailable.svg
Final game

Sonic and Tails share a ring counter. This means, in addition to being able to pick up rings on Sonic's behalf, Tails can lose them.

Notavailable.svg
Nick Arcade prototype
Notavailable.svg
Final game

The AI script powering Tails is in an incomplete stage. For now, Tails behaves exactly like Sonic, just with a slight delay. It's a convincing effect for the first few seconds, but typically leads to computer-controlled Tails getting stuck or lost. Tails also cannot fly, so if he wanders too far from view, he'll be abruptly dropped in from the top of the screen. In the final game, Tails attempts to follow Sonic, and while still often unsuccessful, he's not a liability like in these early prototypes.

In the case of the rolling demos, it is thought a second player was controlling Tails to ensure the results were aesthetically pleasing.

Notavailable.svg
Nick Arcade prototype
Notavailable.svg
Final game

The spin dash cannot be "charged" in this prototype, meaning Sonic and Tails are always released at a set velocity. If spin dashing on a falling platform, the character will remain in the air rather than fall.

Comp sms2protohit.gif
Nick Arcade prototype
Notavailable.svg
Final game

Run into a wall at high speed and Sonic will be thrust backwards, landing on his backside. This mechanic was removed from subsequent prototypes and has never been seen in a Sonic game since. It also only affects Sonic - Tails just stops when he hits a wall.

Graphics comparisons

Level comparisons

References


Sonic the Hedgehog 2 (Nick Arcade prototype), prototype version of Sonic the Hedgehog 2 (16-bit)
S2b title.png

Main page | Comparisons | Maps | Hidden content | Technical information

Part of Sonic the Hedgehog 2 (16-bit) development