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Это подстраница статьи Proto:Sonic the Hedgehog 2 (Genesis)/Simon Wai Prototype.

Green Hill ZoneBehold the monkeyfication! Metropolis ZoneVertical wrapping! Hill Top ZoneLava hurts now! Oil Ocean ZoneToo many checkered balls! Dust Hill ZoneA pretty empty cavern! Casino Night ZonePink and blue nightmare! Chemical Plant ZoneThe same, but different! Neo Green Hill ZoneSemi-aquatic ruins!

Зона ID 01#

• Использует палитру и музыку из Emerald Hill и полностью отсутствует список объектов из режима отладки, кроме кольца и статичного монитора.

This empty stage slot can be accessed by entering Game Genie code AA7A-ACGY or Pro Action Replay code FFFE10:0100 and choosing Green Hill Zone Stage 0. As with Genocide City, Death Egg, and Wood Zone Act 2, Sonic and Tails immediately fall to their deaths upon entering.

Going by early concept art which shows roughly what the level order would have originally looked like, and lines up rather closely with the internal order, this slot was going to be used for a level called "Ocean Wind Zone".

Wood Zone (ID 02)#

A scrapped Zone. It seems that only a small portion was ever implemented and did not get too far.

• What exists of the level quickly ends because of a ramp that has a solid platform blocking the top of it, which is impossible to get past without Debug Mode. Even then, the rest of the level is incomplete, with a nonfunctional conveyor belt near the top.
• Plays the music for Metropolis Zone. Due to the ID in this prototype be ID 03, Which is marble's music ID. In a earlier prototype, the zone played Marble Zone music because it is a copy of ID 03 which used to chemical plant zone.
• If you use Debug Mode, you can move upwards in the level and find a conveyor belt, but it doesn't work.
• Level collision is glitchy.
• Unlike any other zone in the game, the entire background is located under the stage instead of in the background layer.
• Act 2 is empty, containing nothing but Sonic and Tails falling to their deaths.

Zone ID 03#

• Uses the final Oil Ocean theme, and only has the default Ring and Static monitor objects in debug mode.

This empty stage slot can be accessed by entering Game Genie code AA7A-AGGY or Pro Action Replay code FFFE10:0300 and choosing "Green Hill Zone Stage 0" on the stage select. Like Genocide City and Death Egg, this stage uses Emerald Hill's palette and is entirely empty, causing Sonic and Tails to immediately fall to their deaths upon entering. In the Nick Arcade prototype, this slot was used for Emerald Hill Zone. Going off of early concept art which shows roughly what the level order would have originally looked like, and lines up rather closely with the internal order, this slot was going to be used for a desert themed level named "Sand Shower Zone".

Zone ID 06#

• Contains a pitch-black background, uses what would become the two-player Emerald Hill Zone theme in the final, Casino Night's palette, and only has default Ring and Static monitor objects in debug mode.

This is an empty stage slot that can be accessed by entering the Game Genie code AA7A-ANGY or Pro Action Replay code FFFE10:0600 and choosing "Green Hill Stage 0" on the stage select. As with the others, the stage is entirely empty, prompting Sonic and Tails to fall to their immediate deaths upon entering.

According to concept art, which closely matches up with the internal stage order, this was originally meant for a stage called "Blue Lake/Blue Ocean Zone"; from September 14th onwards, the stage is used for Wing Fortress Zone.

Hidden Palace Zone (ID 08)#

Имеет несколько изменении по сравнению с прошлой версии. Для расширенной информации, см. страницу прототипа Nick Arcade.

• This Zone has had mainly minor behind-the-scenes changes since the Nick Arcade build.
• Sonic and Tails have had their underwater palette updated.
• The music has been changed to what would be the 2P VS version of Mystic Cave in the final.
• The debug list has had a face lift, and all the unused objects that were in the Nick Arcade build are now gone. The items that are still there have fixed previews.
• The collision bug caused by spindashing into the big emerald from far away has been fixed.
• The art for Emerald Hill's enemies are no longer loaded in this Zone.
• This and Emerald Hill are the only Zones in this build with badniks in it.

Zone ID 09#

• Uses the Emerald Hill Zone palette, the Sky Chase Zone theme as its default background music, and only has default Ring and Static monitor objects in debug mode.

By entering Game Genie code AA7A-AWGY or Pro Action Replay code FFFE10:0900 and choosing "Green Hill Stage 0" on the stage select, the player will be taken to yet another empty Zone that promptly causes Sonic and Tails to fall to their deaths. According to concept art, which closely matches up with the internal stage order, this was likely meant for a stage called "Rock World Zone".

Genocide City Zone (ID 0E)#

• Both Acts use Chemical Plant's music, Emerald Hill's palette, and the default Ring and Static Monitor objects in debug mode. They're also completely empty.

This Zone was originally designed as a single-Act mechanical-themed area. It is called "Genocide City" in this build because of an average understanding of English by the person who originally named it, then changed to Cyber City after this prototype. Before the team started putting it in the game, though, it was scrapped; the level design was used for Metropolis Act 3, while the graphics were used in Level 3 of Sonic Spinball (The Machine).

Interestingly, the level slot for this level was overwritten with Death Egg in the final, while the slot for Death Egg in this prototype (ID 10) was overwritten with Sky Chase.

Death Egg Zone (ID 10)#

• Both Acts use Emerald Hill's palette, but play no music and are empty. Dying here causes all sound to cut off. However, if you use the 100 ring glitch via debug mode and then die, it will not cut off for that particular death.

Music#

The tracks for the final's invincibility, drowning, ending, Song #10, and credits themes are all nonexistent while the continue, game over, extra life, and Chaos Emerald fanfares are already in their final form. Everything else, however, is at least slightly different. Most, if not all, are based on the Masa's Demo versions of the tracks (notably Super Sonic and Casino Night Zone).

Неиспользованные графики и объекты#

Большинство изменённых и неспользованных графиков и объектов в прототипе Nick Arcade всё ещё здесь за некоторыми исключениями:

• The signposts and fireballs use their final graphics.
• The early animated Chemical Plant Zone graphics are no longer in the ROM.
• The JIS X 0201 character set has been deleted.
• Hill Top Zone's one-way barrier and the nebulous gray switch have been coded and placed in various Zones.
• The Chemical Plant Zone floating platforms now behave as they do in the final game.

Graphics#

Graphic	Offset	Compression	Description
	0x28A6A	None	Animated drill tiles for use in Metropolis Zone. These are loaded to slots 368-377 in VRAM, though the game mistakenly loads two copies of the horizontal drill instead of the vertical drill.
	0x77472	Nemesis	This is the vine that acts as a switch in Mystic Cave Zone. It has not yet been coded at this point.
	0x7756A	Nemesis	The hanging vine from Mystic Cave Zone. It hasn't been coded, either.
	0x4E8A6	None	These graphics are leftovers from Chiki Chiki Boys. This probably resulted from the process of compiling and burning ROMs onto EPROM chips.
	0x4B76C	None

Objects#

Monitor subtype 08. Breaking this monitor will load Super Sonic's palette.

The same effect can be seen through Pro Action Replay code FFF65F:FF00. Super Sonic's unique sprites, speed, invincibility, jump height, and ring drain are not yet present.

Неиспользованное демо#

Watch on YouTube

There's partial data for a Metropolis Zone Act 3 in the demo table that can be viewed using patch code FFFFF2:0004.

This is actually caused by the demo table not being converted after the Nick Arcade prototype:

02 is Chemical Plant, 03 is Hidden Palace, 04 is Green Hill, and 05 is Hill Top. The first four entries are valid, while the remaining entries are placeholders.

In the Simon Wai prototype, the table was changed:

Chemical Plant, Hidden Palace, Green Hill, and Hill Top use their new level IDs, but the duplicate Green Hill and Hill Top entries were not converted. They now point to Metropolis Act 3 and Metropolis Act 1/2 respectively.

The Metropolis Zone demo uses the input from the 2P Green Hill demo, which doesn't really work out.

Unassembled Data#

Located at address 0xE5946 is a snippet of unassembled data. It starts with the comment at the top

; 圧縮前 $8000  圧縮後 $2c00  圧縮率 34.4%  セル数 1024

...which translates to

; Before compression $8000  After compression $2c00  Compression ratio 34.4%  Number of cells 1024

What follows is a bunch of "dc.b"s for the actual chunk data. When assembled, its data matches the beginning of Neo Green Hill Zone's chunk data located at 0xBF568. While a good chunk of the unassembled data is there, it gets cut off.

   dc.b    $1d,$7f,$00,$ff,$f8,$7e,$04,$01,$fb,$02,$00,$03,$04,$05,$04,$80
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    dc.b    $88,$fe,$54,$b4,$7f,$fd,$cc,$f4,$f4,$bc,$f4,$bb,$f4,$ba,$f4,$80
    dc.b    $d1,$7c,$d1,$bf,$50,$c0,$f8,$ff,$fa,$aa,$f8,$ab,$f8,$ac,$f8,$ad
    dc.b    $f8,$ae,$d4,$91,$26,$b7,$f8,$b1,$f8,$fb,$dd,$b2,$f8,$b3,$16,$b0
    dc.b    $0b,$38,$af,$38,$b0,$30,$06,$b0,$0c,$38,$a9,$f0,$f8,$0e,$d6,$ed
    dc.b    $a8,$f0,$f8,$0e,$a7,$f0,$f8,$0d,$ff,$f8,$13,$f0,$d5,$f0,$f8,$0e
    dc.b    $d6,$f0,$f8,$0e,$d7,$fd,$ff,$05,$6e,$f2,$f8,$09,$f4,$d8,$f0,$d9
    dc.b    $55,$71,$55,$70,$55,$6f,$50,$dd,$7f,$7f,$f0,$de,$f0,$df,$f0,$e0
    dc.b    $f2,$18,$00,$f1,$72,$51,$73,$50,$ef,$f0,$d8,$f0,$ff,$f1,$f2,$00
    dc.b    $d9,$a2,$fe,$1f,$a1,$88,$7f,$70,$a1,$89,$a2,$2c,$a2,$2d,$a2,$1a
    dc.b    $f4,$f8,$c8,$67,$02,$59,$5d,$ef,$a0,$6c,$f0,$fe,$f2,$5a,$00,$d4
    dc.b    $9b,$f8,$4c,$2d,$00,$2e,$ac,$e8,$0a,$2f,$ff,$6d,$50,$30,$50,$31
    dc.b    $50,$36,$50,$37,$50,$3c,$40,$df,$1e,$40,$d9,$1b,$ad,$6a,$7c,$e7
    dc.b    $54,$e2,$8d,$88,$94,$f8,$d4,$a0,$8c,$92,$8e,$ee,$cb,$8f,$05,$19
    dc.b    $ee,$bf,$2a,$e2,$f4,$80,$88,$0a,$e6,$04,$14,$f2,$e0,$ba,$f6,$ee
    dc.b    $c0,$d3,$94,$f5,$e0,$c0,$d0,$15,$58,$85,$80,$84,$da,$

Early Zone Leftovers#

To do: There's still more leftover bits throughout the ROM that have not been documented.

Starting at 0xC2148 in the ROM is leftover zone data from an earlier point in development.

Early Casino Night Chunks#

Located at 0xC2148-0xC943C is what looks to be chunk data for a very early version of Casino Night zone. The beginning of the data is cut off, but when it is aligned, the shapes of the chunks line up with the chunk data that's normally used in the prototype. They appear to be very early, as none of the data that's used in the prototype matches the chunk mappings. Watch on YouTube

Early Chemical Plant Remnants#

Starting at offset 0xC943C is data for an early version of Chemical Plant, which includes tiles, block and chunk data. They are much different from the used data, and when formatted correctly, line up much more with the layout from the Nick Arcade prototype.

Early Neo Green Hill Zone Remnants#

Starting at 0xD602E is a bunch of early data related to Neo Green Hill Zone, including chunks, blocks, and 2 sets of tiles that are identical to those used, with one set being cut off by some chunk data.

Also located at 0x42374 - 0x4265F is an unused BG layout that is similar to the Act 2 layout used in the final game. Overall, the zone appears to have not changed much between these two versions.

Chiki Chiki Boys Data Leftovers#

Several remnants exist in various parts of the ROM, though here they're little more than padding. The locations of the data in the Sonic 2 ROM match the equivalent area in both versions of the Chiki Chiki Boys ROM, but with some slight differences suggesting that the remnants here may be from a prototype.

Miscellaneous data can be found at:

• 0x24A30-0x27FFF
• 0x437BC-0x43FFF
• 0x46350-0x47FFF
• 0x48DB4-0x4FFFF