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Sonic the Hedgehog 2 (Simon Wai prototype)/Comparisons/Audio

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Music

Many of the music tracks in the Simon Wai prototype are unfinished, using different instruments or playing at different tempos.

Missing are the invincibility, ending, credits and countdown music, as well as the unused track #10, however there are five slots filled with duplicate tracks.

Simon Wai prototype Final game
ID Usage ID Usage
81 Oil Ocean Zone 08 Casino Night Zone (2-player)
82 Green Hill Zone 02 Emerald Hill Zone
83 Wood Zone, Metropolis Zone 05 Metropolis Zone
84 Casino Night Zone 09 Casino Night Zone
85 Dust Hill Zone 0B Mystic Cave Zone
86 Hidden Palace Zone 03 Mystic Cave Zone (2-player)
87 Neo Green Hill Zone 07 Aquatic Ruin Zone
88 100 Ring life jingle 0A Death Egg Zone
89 Unused 12 Special Stage
8A Level select 11 Options, level select
8B Level select 11 Options, level select
8C Unused 14 Death Egg Zone: Giant Mech
8D Chemical Plant Zone 0E Chemical Plant Zone
8E Boss 13 Boss
8F Unused 0D Sky Chase Zone
90 Unused 04 Oil Ocean Zone
91 Unused 04 Oil Ocean Zone
92 Unused 0F Wing Fortress Zone
93 Unused 0C Emerald Hill Zone (2-player)
94 Unused 01 2-player results
95 Unused 16 Super Sonic
96 Hill Top Zone 06 Hill Top Zone
97 Hill Top Zone 06 Hill Top Zone
98 Extra life 18 Extra life
99 Title screen 19 Title screen
9A Act complete 1A Act complete
9B Game over/Time over 1B Game over/Time over
9C Unused 1C Continue
9D Unused 1D Chaos Emerald
9E Unused 1E Credits
9F Unused 1F Countdown

Sound effects

Prototype ID Final ID Name Used in prototype Used in final Comments
A0 20 Jump Yes Yes From Sonic the Hedgehog.
A1 21 Checkpoint Yes Yes From Sonic the Hedgehog.
A2 22
A3 23 Death Yes Yes From Sonic the Hedgehog.
A4 24 Skid Yes Yes From Sonic the Hedgehog.
A5 25
A6 26 Hit by spikes Yes Yes From Sonic the Hedgehog.
A7 27 Push object No Yes From Sonic the Hedgehog. Replaced in final by introduction stars.
A8 28 Enter Special Stage No From Sonic the Hedgehog. Replaced in final.
A9 29
AA 2A Water splash Yes Yes From Sonic the Hedgehog.
AB 2B
AC 2C Boss hit Yes Yes From Sonic the Hedgehog.
AD 2D Air bubble Yes Yes From Sonic the Hedgehog.
AE 2E Fireball From Sonic the Hedgehog.
AF 2F Shield Yes Yes From Sonic the Hedgehog.
B0 30 Circular saw No No From Sonic the Hedgehog.
B1 31 Electricity No No From Sonic the Hedgehog.
B2 32 Drown Yes Yes From Sonic the Hedgehog.
B3 33 Lava sprout No No From Sonic the Hedgehog.
B4 34 Bumper No Yes From Sonic the Hedgehog.
B5 35 Ring Yes Yes From Sonic the Hedgehog.
B6 36
B7 37 Labyrinth Zone Act 3 switch No No From Sonic the Hedgehog.
B8 38
B9 39
BA 3A Special stage diamond No No From Sonic the Hedgehog.
BB 3B Scrap Brain Zone bridge No No From Sonic the Hedgehog.
BC 3C Spin Dash release Yes Yes
BD 3D Giant Mech stomp No Yes
BE 3E Spin Yes Yes From Sonic the Hedgehog.
BF 3F Continue No Yes From Sonic the Hedgehog.
C0 40 Batbrain flap No From Sonic the Hedgehog. Replaced in final.
C1 41 Hit enemy Yes Yes From Sonic the Hedgehog.
C2 42 Air counter Yes Yes From Sonic the Hedgehog.
C3 43
C4 44 Boss explosion Yes Yes From Sonic the Hedgehog.
C5 45 End of Act total No Yes From Sonic the Hedgehog.
C6 46 Lose rings Yes Yes From Sonic the Hedgehog.
C7 47 Marble Zone chain No No From Sonic the Hedgehog.
C8 48 Fire From Sonic the Hedgehog.
C9 49 End of Act bonus No No From Sonic the Hedgehog.
CA 4A Enter Special Stage No Yes From Sonic the Hedgehog.
CB 4B
CC 4C Spring Yes Yes From Sonic the Hedgehog.
CD 4D Switch Yes Yes From Sonic the Hedgehog.
CE 4E Ring Yes Yes From Sonic the Hedgehog.
CF 4F Signpost Yes Yes From Sonic the Hedgehog.
D0 50 Catcher Eggman spark. No Yes Pitched too low in prototype.
D1 51 No Pitched too low in prototype.
D2 52 No Pitched too low in prototype.
D3 53 2-player Act finished alarm No Yes Pitched too low in prototype.
D4 54 Oil Ocean Zone platform No Yes Pitched too low in prototype.
D5 55 Oil Ocean Zone purple spikes No Yes Pitched too low in prototype.
D6 56 Casino Night Zone lift No Yes Pitched too low in prototype.
D7 57 No Pitched too low in prototype.
D8 58 Casino Night Zone drop target No Yes Pitched too low in prototype.
D9 59 Casino Night Zone slingshot No Yes Pitched too low in prototype.
DA 5A No Pitched too low in prototype.
DB 5B No Pitched too low in prototype.
DC 5C No Pitched too low in prototype.
DD 5D No Pitched too low in prototype.
DE 5E Propeller No Yes Pitched too low in prototype.
DF 5F Super Sonic transform No Yes Pitched too low in prototype.
E0 60 Spin dash charge No Pitched too low in prototype.
E1 61 No Blank in prototype
E2 62 Casino Night Zone plunger No Yes Blank in prototype
E3 63 No Blank in prototype
E4 64 No Blank in prototype
E5 65 No Blank in prototype
E6 66 No Blank in prototype
E7 67 No Blank in prototype
E8 68 No Blank in prototype
E9 69 Blank in prototype
EA 6A Wing Fortress Zone laser No Yes Blank in prototype
EB 6B Wing Fortress Zone propeller No Yes Blank in prototype
EC 6C 2-player teleport No Yes Blank in prototype
ED 6D 2-player no entry No Yes Blank in prototype
EE 6E Mecha Sonic noise No Yes Blank in prototype
EF 6F No Blank in prototype
F0 70 No Blank in prototype
F1 71
F2 72
F3 73
F4 74
F5 75
F6 76
F7 77
F8 78
F9 79
FA 7A Sega jingle Yes Yes From Sonic the Hedgehog.
FB 7B
FC 7C
FD 7D
FE 7E
FF 7F

General comparisons

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Simon Wai Prototype
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Final game

Instead of playing the 1-Up sound when Sonic gets 100 or 200 rings, the game plays a prototype version of the music from Death Egg Zone (Death Egg Zone plays no music). However, if Sonic breaks open a 1-Up monitor, the proper 1-Up sound will play. The reason why this happens is because sound bank $88, which was the 1-Up sound in the Nick Arcade prototype, is now the Death Egg theme and wasn't overwritten.

References


Sonic the Hedgehog 2 (Simon Wai prototype), prerelease version of Sonic the Hedgehog 2 (16-bit)
S2b title.png

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