S2B
S2B

The ultimate archive of Sonic 2 prototype information

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9.6 years
since unearthing of
prototype ROM


15.7 years
since release
of Sonic 2 on MegaDrive


1.9 years
since renaming to S2B


S2B/Sonic 2 Beta Zones

The nearly completed zones can be played by simply pressing Start at the title screen. The rest you'll need the level select code plus debug.

Nick Arcade Prototype

Level ID
[Asc] [Desc]
Normal gameplay order
[Asc] [Desc]

Music ID in prototype
[Asc] [Desc]
Zone
03 01 [ZoneIcon] Starlight Zone 84
00 - [ZoneIcon] Green Hill Zone 81
02 - [ZoneIcon] Marble Zone 83
04 - [ZoneIcon] Spring Yard Zone 85
01 - [ZoneIcon] Labyrinth Zone 82
05 - [ZoneIcon] Scrap Brain Zone 86
Simon Wai Prototype

Level ID
[Asc] [Desc]
Normal gameplay order
[Asc] [Desc]
Equivalent music ID in final
[Asc] [Desc]
Music ID in prototype
[Asc] [Desc]
Zone
0F 01 [ZoneIcon] Neo Green Hill Zone 87 07
0D 02 [ZoneIcon] Chemical Plant Zone 8D 0E
07 03 [ZoneIcon] Hill Top Zone 96
97
06
00 04 [ZoneIcon] Green Hill Zone 82 02
02 - [ZoneIcon] Wood Zone 83 05
04
05
- [ZoneIcon] Metropolis Zone 83 05
08 - [ZoneIcon] Hidden Palace Zone 86 03
0A - [ZoneIcon] Oil Ocean Zone 81 08
0B - [ZoneIcon] Dust Hill Zone 85 0B
0C - [ZoneIcon] Casino Night Zone 84 09
0E - [ZoneIcon] Genocide City Zone 8D 0E
10 - [ZoneIcon] Death Egg Zone - -
Final Version

Level ID
[Asc] [Desc]
Normal gameplay order
[Asc] [Desc]
Music ID in final
[Asc] [Desc]
Equivalent music ID in prototype
[Asc] [Desc]
Zone
00 01 [ZoneIcon] Emerald Hill Zone 82 02
0D 02 [ZoneIcon] Chemical Plant Zone 8D 0E
0F 03 [ZoneIcon] Aquatic Ruin Zone 87 07
0C 04 [ZoneIcon] Casino Night Zone 84 09
07 05 [ZoneIcon] Hill Top Zone 96
97
06
0B 06 [ZoneIcon] Mystic Cave Zone 85 0B
0A 07 [ZoneIcon] Oil Ocean Zone 90
91
04
04
05
08 [ZoneIcon] Metropolis Zone 83 05
10 09 [ZoneIcon] Sky Chase Zone 8F 0D
06 10 [ZoneIcon] Wing Fortress Zone 92 0F
0E 11 [ZoneIcon] Death Egg Zone 88 0A
08 - [ZoneIcon] Hidden Palace Zone - 10
  • Level ID is the value the game refers to the level. Note that Metropolis Zone Act 3 has a separate level ID, 05.
  • A "-" in gameplay order means the zone is not accessible at all in normal gameplay.
  • A "-" in music ID means the music does not exist in the game.

 

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