Sonic the Hedgehog 2 (Genesis)

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m (that is SO not a beta. We HAVE betas; they're far more complete.)
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  | debug = Yes
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'''''Sonic the Hedgehog 2''''' is the sequel to the first game. Sadly, a large number of interesting things were cut from the final version, such as the ever-famous Hidden Palace Zone.
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'''''Sonic the Hedgehog 2''''' is the sequel to [[Sonic the Hedgehog (Genesis)|the first game]]. Sadly, a large number of interesting things were cut from the final version, such as the ever-famous Hidden Palace Zone.
==Debug Mode==
==Debug Mode==
-
As in ''[[Sonic the Hedgehog]]'', there exists a well-known debug mode within the game. To enable it, you have to do the following:
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As in ''Sonic 1'', ''Sonic 2'' has a well-known debug mode:
* Go into the Options mode.
* Go into the Options mode.
-
* In the Sound Test, select the following numbers in order, pressing C for each number: 19, 65, 09, 17 (1965-09-17 - Yuji Naka's birthday). This accesses the Level Select.
+
* In the Sound Test, select the following numbers in order, pressing C for each number: 19, 65, 09, 17 (September 17, 1965 is Yuji Naka's birthday). This accesses the Level Select.
-
* In the Level Select sound test, select the following numbers in order, pressing C for each number: 01, 09, 09, 02, 01, 01, 02, 04 (1992-11-24 - the date of the game's US release).
+
* Press start to return to the title screen. When Sonic and Tails pop up, Hold A and press Start to bring up the Level Select screen.
 +
* In the Level Select sound test, select the following numbers in order, pressing C for each number: 01, 09, 09, 02, 01, 01, 02, 04 (November 24, 1992 is the date of the game's US release).
* Choose any level, then hold A and press Start. Hold A until the level fully loads.
* Choose any level, then hold A and press Start. Hold A until the level fully loads.
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!Artwork||Name||Description
!Artwork||Name||Description
|-
|-
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|[[Image:Aquatic ruin door.png|center]]||ARZ Barrier||Unused door barriers from Aquatic Ruin Zone.
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|[[Image:Aquatic ruin door.png|center]]||Barrier||Unused door barriers from Aquatic Ruin Zone.
|-
|-
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|[[Image:Balkiry2.png|center]]||Unused Balkiry Frame||Unused frame of the Balkiry badnik with landing gear.
+
|[[Image:Balkiry2.png|center]]||Unused Balkiry Frame||Unused frame of the Balkiry badnik from Sky Chase Zone, with landing gear deployed. It's possible that they were originally intended to take off from Wing Fortress as it passed by.
|-
|-
|[[Image:S2-Turtle.gif|center]]||Walking Turtle||Walking sprites of the turtles that pop out of the badniks in Sky Chase Zone. Normally you'll never see this, since the badnik never has the opportunity to hit the ground.
|[[Image:S2-Turtle.gif|center]]||Walking Turtle||Walking sprites of the turtles that pop out of the badniks in Sky Chase Zone. Normally you'll never see this, since the badnik never has the opportunity to hit the ground.
|-
|-
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|[[Image:HPZiconS2.png|center]]||HPZ Icon||Level Select icon for Hidden Palace Zone, which never made it into the final game. The art is present in ''[[Sonic the Hedgehog 3]]''<nowiki>'s</nowiki> level select.
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|[[Image:HPZiconS2.png|center]]||HPZ Icon||Level Select icon for Hidden Palace Zone, which never made it into the final (although see below). The art is present in ''[[Sonic the Hedgehog 3]]''<nowiki>'s</nowiki> level select.
|-
|-
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|[[Image:Sonic2-giantlaser.gif|center]]||WFZ Laser||Large laser shooting through a spinning platform in Wing Fortress Zone. Never seen in-game.
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|[[Image:Sonic2-giantlaser.gif|center]]||Laser||A large laser shooting through a spinning platform, intended for Wing Fortress Zone.
|-
|-
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|[[Image:Sonic2-mrzobject.png|center]]||MCZ Ring Platform||Weird platform made of rings, placeable using debug mode. It moves back and forth depending on which side you stand on.
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|[[Image:Sonic2-mrzobject.png|center]]||Ring Platform||A weird platform made of rings, which can be placed in Mystic Cave Zone via debug mode. It moves back and forth depending on which side you stand on.
|-
|-
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|[[Image:Sonic2-wfz-spinnything2.gif|center]]||WFZ Spinning Pole||Weird spinning pole that acts like a badnik - you can destroy it, and it can hurt you, but it doesn't actually move.
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|[[Image:Sonic2-wfz-spinnything2.gif|center]]||Spinning Pole||Weird spinning pole that acts like a badnik - you can destroy it, and it can hurt you, but it doesn't actually move. Would have appeared in Wing Fortress Zone.
|-
|-
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|[[Image:S2 static monitor.png|center]]||Static TV Monitor||Powerup monitor which harms you when broken. Never seen in-game.
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|[[Image:S2 static monitor.png|center]]||Static TV Monitor||A monitor which harms you when broken.
|-
|-
|}
|}
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==Unused Music Track==
==Unused Music Track==
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[[File:Sonic 2 HPZ.ogg]]  
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[[File:Sonic 2 HPZ.ogg]]
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In the sound test, song $10 is actually an unused song established to be the music meant for Hidden Palace Zone. This music is not in the Simon Wai prototype, and the 2-player Mystic Cave Zone theme is used for Hidden Palace instead.
+
In the sound test, song {{hex|$10}} is an unused song established to be the music meant for Hidden Palace Zone (see below). It is not in the Simon Wai prototype, where the 2-player Mystic Cave theme is used for Hidden Palace.
{{Source|Sonic Retro}}
{{Source|Sonic Retro}}
==Scrapped Zone Remains==
==Scrapped Zone Remains==
-
The level slot containing Hidden Palace Zone in [[Proto:Sonic the Hedgehog 2|this game's prototypes]] still actually contains the full level layout, object layout, and even (whatever's left of) the collision data! The graphics and badniks have been removed, however. By using the [[Game Genie]] code {{hex|ACLA-ATD4}} and selecting Death Egg in the level select, you can see this for yourself. For the "Revision 00" version of the final, use {{hex|ACLA-ATDR}}. This level uses track 10 of the sound test (otherwise unused) and Oil Ocean's debug item list.
+
The level slot containing Hidden Palace Zone in [[Proto:Sonic the Hedgehog 2|the prototypes]] still actually contains the full level layout, object layout, and even (whatever's left of) the collision data! The graphics and badniks have been removed, however. By using [[Game Genie]] code {{hex|ACLA-ATD4}} and selecting Death Egg in the level select, you can see this for yourself. For the "Revision 00" version of the final, use {{hex|ACLA-ATDR}}. This level uses track 10 of the sound test (otherwise unused) and Oil Ocean's debug item list.
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The level slot containing Wood Zone in the prototypes also has something left in the final, albeit far less than Hidden Palace &ndash; only palette and music selection data. Accessing it via [[Action Replay|Pro Action Replay]] code {{hex|FFFE10:0200}} or Game Genie code {{hex|ACLA-AECY}} and selecting Death Egg in the level select leads to an objectless Emerald Hill 1 with Wood's palette and glitchy collision. The debug item list only has rings and teleport monitors.
+
The level slot containing Wood Zone in the prototypes also has something left in the final, albeit far less than Hidden Palace: only palette and music selection data. Accessing it via [[Action Replay|Pro Action Replay]] code {{hex|FFFE10:0200}} or Game Genie code {{hex|ACLA-AECY}} and selecting Death Egg in the level select leads to an objectless Emerald Hill 1 with Wood's palette and glitchy collision. The debug item list only has rings and teleport monitors.
<gallery widths=320px heights=240px perrow=2>
<gallery widths=320px heights=240px perrow=2>
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File:WoodLeftover.png|What's left of Wood Zone. Note the life icon displays Tails instead of Sonic.
File:WoodLeftover.png|What's left of Wood Zone. Note the life icon displays Tails instead of Sonic.
</gallery>
</gallery>
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{{Sonic the Hedgehog series}}
{{Sonic the Hedgehog series}}

Revision as of 15:19, 10 May 2012

Title Screen

Sonic the Hedgehog 2

Developer: Sonic Team / Sega Technical Institute
Publisher: Sega
Platform: Genesis
Released in JP: November 21, 1992
Released in US: November 24, 1992
Released in EU: November 24, 1992


AreasIcon.png This game has unused areas.
GraphicsIcon.png This game has unused graphics.
MusicIcon.png This game has unused music.
DebugIcon.png This game has debugging material.


ProtoIcon.png This game has a prototype article

Sonic the Hedgehog 2 is the sequel to the first game. Sadly, a large number of interesting things were cut from the final version, such as the ever-famous Hidden Palace Zone.

Contents

Debug Mode

As in Sonic 1, Sonic 2 has a well-known debug mode:

  • Go into the Options mode.
  • In the Sound Test, select the following numbers in order, pressing C for each number: 19, 65, 09, 17 (September 17, 1965 is Yuji Naka's birthday). This accesses the Level Select.
  • Press start to return to the title screen. When Sonic and Tails pop up, Hold A and press Start to bring up the Level Select screen.
  • In the Level Select sound test, select the following numbers in order, pressing C for each number: 01, 09, 09, 02, 01, 01, 02, 04 (November 24, 1992 is the date of the game's US release).
  • Choose any level, then hold A and press Start. Hold A until the level fully loads.

From here, you have access to a variety of things:

  • Invincibility
  • Infinite Time
  • Debug Coordinates (in place of score)
  • Sprite Counter (in place of time)
  • Placement Mode: Press B to enter placement mode. From there...
    • Press A to move forward one object.
    • Hold A and press C to move backward one object.
    • Press C to place the object.
  • Pause Options:
    • Press A to go back to the title screen.
    • Press B to enable slow motion.
    • Press C to enable frame advance.

In addition, if you die, press B to enter placement mode before Sonic leaves the screen, and then press B at a safe spot to revive yourself. However, trying to place an object in this death state will freeze the game.

Unused Sprites

ArtworkNameDescription
Aquatic ruin door.png
BarrierUnused door barriers from Aquatic Ruin Zone.
Balkiry2.png
Unused Balkiry FrameUnused frame of the Balkiry badnik from Sky Chase Zone, with landing gear deployed. It's possible that they were originally intended to take off from Wing Fortress as it passed by.
S2-Turtle.gif
Walking TurtleWalking sprites of the turtles that pop out of the badniks in Sky Chase Zone. Normally you'll never see this, since the badnik never has the opportunity to hit the ground.
HPZiconS2.png
HPZ IconLevel Select icon for Hidden Palace Zone, which never made it into the final (although see below). The art is present in Sonic the Hedgehog 3's level select.
Sonic2-giantlaser.gif
LaserA large laser shooting through a spinning platform, intended for Wing Fortress Zone.
Sonic2-mrzobject.png
Ring PlatformA weird platform made of rings, which can be placed in Mystic Cave Zone via debug mode. It moves back and forth depending on which side you stand on.
Sonic2-wfz-spinnything2.gif
Spinning PoleWeird spinning pole that acts like a badnik - you can destroy it, and it can hurt you, but it doesn't actually move. Would have appeared in Wing Fortress Zone.
S2 static monitor.png
Static TV MonitorA monitor which harms you when broken.
(Source: Sonic Retro)

Unused Music Track

Sonic 2 HPZ.ogg

In the sound test, song $10 is an unused song established to be the music meant for Hidden Palace Zone (see below). It is not in the Simon Wai prototype, where the 2-player Mystic Cave theme is used for Hidden Palace.

(Source: Sonic Retro)

Scrapped Zone Remains

The level slot containing Hidden Palace Zone in the prototypes still actually contains the full level layout, object layout, and even (whatever's left of) the collision data! The graphics and badniks have been removed, however. By using Game Genie code ACLA-ATD4 and selecting Death Egg in the level select, you can see this for yourself. For the "Revision 00" version of the final, use ACLA-ATDR. This level uses track 10 of the sound test (otherwise unused) and Oil Ocean's debug item list.

The level slot containing Wood Zone in the prototypes also has something left in the final, albeit far less than Hidden Palace: only palette and music selection data. Accessing it via Pro Action Replay code FFFE10:0200 or Game Genie code ACLA-AECY and selecting Death Egg in the level select leads to an objectless Emerald Hill 1 with Wood's palette and glitchy collision. The debug item list only has rings and teleport monitors.

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