Sonic Month 2019

Sonic the Hedgehog CD (Dec 4, 1992 prototype)

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Title Screen
Sonic the Hedgehog CD (Dec 4, 1992 prototype)
Build date Dec 4, 1992 16:34:01
Build name Ver0.02 遊星セガワールド版
Dump status Released
Dumped by drx
Released by drx
File release date October 26, 2019
Origin CD-R
Lot Sonic Month 2019
Labels CD-SONIC Ver0.02 遊星セガワールド版 2/4 '93.5.13
Dump method DiscImageCreator (2 dumps, drive, PX-760A)
Ownership drx (2019-Present)
Game Sonic the Hedgehog CD
System Sega CD
Genre Platform
Final build JP Aug 6, 1993
EU Aug 27, 1993
US Oct 12, 1993
Release date JP Sep 23, 1993
EU Oct 1, 1993
US Nov 19, 1993
Download Sonic the Hedgehog CD (Dec 4, 1992 prototype) (info, raw dump)

An early prototype of Sonic the Hedgehog CD for the Sega CD.

Notes

The Cutting Room Floor research
  • This prototype was featured at the Yuusei Sega World (遊星セガワールド) event in 1992. The event was available to the public and was also the first public appearance of Sonic the Hedgehog CD worldwide.
  • This prototype was built almost a full year before the final retail release and seems to have been built specifically for the event, as it only contains files for just the playable content (with a few exceptions).
  • The prototype was also used as an early preview for various magazines in the months following the event.
  • General Differences
    • The name of the disc volume itself is named after the game "Dark Wizard" which came out around the time Sonic CD was being made.
    • The disc header specifies that the title of the game is "CD SONIC THE HEDGEHOG" rather than "SONIC THE HEDGEHOG CD". The header also lacks a proper game code and with a date of APR 1993 (which might be the original projected release date, as many magazines at the time predicted the game would be out sometime within 1st/2nd quarter 1993).
    • The game boots to a SEGA logo complete with SEGA scream. This would be featured in later prototypes but would eventually be dropped.
    • The title screen is different in comparison to the final version, but is similar to the one featured in later prototypes. The only difference between this build and later prototypes is that the chosen song is the full "You Can Do Anything" instead of a short arrangement. The version of "You Can Do Anything" uses a different vocal take and is the same version featured in Sonic Jam and various albums (True Blue, the 10th Anniversary album, etc).
    • The title screen doesn't contain code for the level select cheat, so it's impossible to load the menu without hacking.
    • The opening video contains more artifacts than can be found in the final version. "You Can Do Anything" doesn't play during the opening video. The frame is also different, containing a message that says "開発画面" (which translates to "Development Screen").
    • Only the opening video can be seen after the title screen. There are no gameplay demos.
    • The Time Attack menu is completely different in comparison to what would be used in later builds. At this point, the game still has eight zones rather than seven. The name of the first zone is called "Salad Plain" instead of "Palmtree Panic". No other graphics exist in the game for the other zones, hinting that this menu was put together rather quickly for the demo. The menu itself also uses Collision Chaos Present's BGM instead of D.A. Garden.
  • Gameplay Differences
    • There are no title cards when starting a stage.
    • If you press start on the second controller, you can spawn a second "ghost" Sonic just like later builds that have a debug mode. However, it's impossible to activate the debug mode in this build without hacking since the check for the debug mode flag was removed from Sonic's object code.
    • Sonic's ledge animation is the same as the one from Sonic 1.
    • Sonic lacks the Super Peel Out animation he has in later builds. This build uses his normal run animation instead. It's also not as fast as it will be in later builds.
    • The camera doesn't move forward while running.
    • Sonic's spindash is too fast if held for a long time.
    • Sonic's animation after waiting three minutes is much different in comparison to what's used in later builds. Sonic doesn't say "I'm outta here!" when he jumps.
    • The game can't be paused.
    • The sign post at the end of each act says "You Say!" instead of the usual sign post. This is a play on words on the name of the event that this prototype was featured in. When you pass the sign, Sonic automatically moves right and the stage ends automatically, there is no score tally screen or Level Complete BGM.
    • There are no checkpoints in any of the stages.
    • Sonic can travel to the past and future, but there's no way to create a good future in this build. However, the files for the good future versions of the stage exist in this build but go unused.
    • The time travel screen is different and uses the invincibility stars from Sonic 1.
    • When Sonic appears in a new time period you'll lose any rings you collected. This can sometimes lead to a scenario where you might land on top of a badnik and die instantly upon entering.
    • If you finish the second act or lose all your lives, the game ends and goes to a "COMING SOON" screen. Unlike later builds, this build uses the Good Future BGM for Palmtree Panic instead of the Invincibilty theme.
    • The Past uses a unique Redbook audio track instead of a PCM track. This version was never released on any soundtrack before.
    • All Redbook audio tracks lack a fade out except for the track used for Salad Plains Past.

Screenshots

Videos

Files

File Archive Contents

File Type Date Size SHA-1
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 1).bin File 2019-08-18 21:30:16 17.95 MB c5e5cf0d8ffe2d6004b38fd57c011935de159bc4
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 2).bin File 2019-08-18 21:30:16 18.2 MB 1ca7b6a3d647cb0aca1acf8d0a7da3bb0a47704a
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 3).bin File 2019-08-18 21:30:16 16.76 MB 47f31c40851d5c77c8e3c7fb4b39640874e2801d
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 4).bin File 2019-08-18 21:30:16 15.58 MB bdddf4231cf0d407b17b7515442b3094df8e39aa
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 5).bin File 2019-08-18 21:30:16 13.58 MB f008418a584f6212f3f33c71969e91116016fed7
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 6).bin File 2019-08-18 21:30:16 14.14 MB 3594c716ed834ba889cb8e26532ac29b711e80c4
Sonic the Hedgehog CD (Dec 4, 1992 prototype) (Track 7).bin File 2019-08-18 21:30:16 16.8 MB d5da0a756f6e821ad4296bf8c6440ddf433c7536
Sonic the Hedgehog CD (Dec 4, 1992 prototype).cue File 2019-10-25 18:03:48 978 bytes edc146efc2dfa0663468000b26060ac761177576

Disc Contents

File Type Date Size SHA-1
ABS.TXT Text file 1992-12-04 21:34:01 57 bytes 44c9dd45a9b1be718dad972cddd3a585a54b16a0
ATTACK.BIN File 1992-12-04 21:34:01 2 KB b608dafcebf37bd947c7be48d92fe8da6b829f8a
ATTACK.MMD File 1992-12-04 21:34:01 10.1 KB 1758db76a3b1085217107bc73c09e81a5e365ae9
BIB.TXT Text file 1992-12-04 21:34:01 59 bytes a6afe4964f9e35b300cce61e1988ebbb8b657fba
COME__.MMD File 1992-12-04 21:34:01 8.5 KB dda3379c3fe150fdff12ab600c80da8b5db3a554
CPY.TXT Text file 1992-12-04 21:34:01 94 bytes 5553962f5d3e771a3d07c6c52718d2412a762d17
IPX___.MMD File 1992-12-04 21:34:01 828 bytes f4d1c407663dace99b912a20d721d052045b5b66
LOGO_M.MMD File 1992-12-04 21:34:01 8.8 KB e623c44dbda1ffce9990cbc1e2e9a8a75a625d92
LOGO_S.BIN File 1992-12-04 21:34:01 172 bytes 6e5eb182e9c12d30301f1f81f5b7873345220bb1
OPEN_M.MMD File 1992-12-04 21:34:01 11.6 KB 7d80164667b5560e8040d8918c1dc1e52ed586d4
OPEN_S.BIN File 1992-12-04 21:34:01 542 bytes b99c578013f609acd0a8a5c4c501454ee110eb7d
OPN.STM File 1992-12-04 21:34:01 13.18 MB f86f8d9bf1bfa9dd2589cdaf6e284777ea471e1e
PCM000.BIN File 1992-12-04 21:34:01 25.6 KB a0f7cdefd3cbe1ced68622bd834e600e8dd3c3ad
R11A__.MMD Palmtree Panic 1 Present 1992-12-04 21:34:01 256 KB 37760fd5878444fc71e83d1eeba8a0f79e2153d1
R11B__.MMD Palmtree Panic 1 Past 1992-12-04 21:34:01 256 KB 44870e5d8c50d2c1c258a64826e49126eb2e683e
R11C__.MMD Palmtree Panic 1 Good Future 1992-12-04 21:34:01 256 KB 0df068f43477ec9f55d64b24b765aed0b68a8ed6
R11D__.MMD Palmtree Panic 1 Bad Future 1992-12-04 21:34:01 256 KB 129b4d060cc1fd49322be4c7ed9130ab994ac7a7
R12A__.MMD Palmtree Panic 2 Present 1992-12-04 21:34:01 256 KB ac3853f5cf6aad2672f9cfb5e89d0557fa0e27f4
R12B__.MMD Palmtree Panic 2 Past 1992-12-04 21:34:01 256 KB 7ed3b47a66accda13fea9c1d8bd2b8550c0d56a6
R12C__.MMD Palmtree Panic 2 Good Future 1992-12-04 21:34:01 256 KB 979289e3366b90ee2180828288afb4a6bb3c0d59
R12D__.MMD Palmtree Panic 2 Bad Future 1992-12-04 21:34:01 256 KB c401f1f8130a225dfb632fb47b7127c37bc2ef9e
SSEL__.MMD File 1992-12-04 21:34:01 3.6 KB 2f65879078aa39f929b051cfc4d05be9a964a2c5
TITLE_.MMD File 1992-12-04 21:34:01 22.3 KB e3b978b18395c71d48425d42f20a82cd7f95f75a
WARP__.MMD File 1992-12-04 21:34:01 4 KB f2303eb3d857187acbd39f837c9ecaa29e46c432

Header

00000100 53 45 47 41 20 4d 45 47 41 20 44 52 49 56 45 20 SEGA MEGA DRIVE 00000110 28 43 29 53 45 47 41 20 31 39 39 33 2e 41 50 52 (C)SEGA 1993.APR 00000120 43 44 2d 53 4f 4e 49 43 20 54 48 45 20 48 45 44 CD-SONIC THE HED 00000130 47 45 48 4f 47 20 20 20 20 20 20 20 20 20 20 20 GEHOG 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000150 43 44 2d 53 4f 4e 49 43 20 54 48 45 20 48 45 44 CD-SONIC THE HED 00000160 47 45 48 4f 47 20 20 20 20 20 20 20 20 20 20 20 GEHOG 00000170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000180 58 58 20 30 30 30 30 30 30 30 30 2d 30 30 20 20 XX 00000000-00 00000190 4a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 J 000001a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001f0 4a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 J


Origin


See also