Sonic Chaos (Jul 13, 1993 prototype)

Sonic Chaos (Jul 13, 1993 prototype)
Build date Jul 13, 1993 Dump status Released Dumped by drx Released by drx File release date November 2, 2019 Origin EPROMs Lot Sonic Month 2019 Labels SONIC CHAOS GG 13-7 Dump method True-USB PRO GQ-4X Ownership drx (2019-Present) Game Sonic Chaos System Sega Master System Genre Platform Final build EU Aug 3, 1993 Release date EU Nov 27, 1993

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A prototype of Sonic Chaos (also known as Sonic & Tails in Japan) for the Sega Master System.

Notes

The Cutting Room Floor research

This prototype has a research article on TCRF.

• While the EPROMs state the date "13-7", the ROM itself says "MS SONIC.THE.HEDGEHOG.3 Ver0.20 1993/06/30 @SEGA/Aspect Co.,Ltd".
• The build lacks an intro.
• The title screen lacks the song used from the final. The trademark symbol is missing from the logo.
• The game will go to a "demo mode" after a few seconds at the title screen. However, no demos have been recorded yet and so the player just stands in place for a few seconds.
• Pressing start at the title screen brings you to the level select.
• Strings for five special stages can be located in the ROM immediately after the level select strings but they do not load for some reason, and it doesn't look like you can go to the special stage yet after collecting 100 rings, so instead set address D295 to any value between 8 and C.
• The sound test hasn't been programmed yet.
• The title card for each level is slightly different in comparison to the final retail release.
• Different Death BGM.
• The running shoes do not work yet.
• In this prototype, the music stops as soon as the end level sign hits the ground. In the final, the music stops as soon as it's touched.
• The boss BGM is different.
• The invincibility BGM is slightly different (everything seems to play at a slightly higher octave).
• The level complete jingle after defeating a boss is different.
• The BGM used in Electric Egg Zone is completely different and seems to be based on the varient of the introduction theme.

Screenshots

• 
  Title screen.
• 
  Level select.
• 
  Character select.
• 
  Title card.
• 
  Turquoise Hill Zone Act 1.
• 
  Turquoise Hill Zone Act 2.
• 
  Turquoise Hill Zone Act 3.
• 
  Gigalopolis Zone Act 1.
• 
  Gigalopolis Zone Act 2.
• 
  Gigalopolis Zone Act 3.
• 
  Sleeping Egg Zone Act 1.
• 
  Sleeping Egg Zone Act 2.
• 
  Sleeping Egg Zone Act 3.
• 
  Mecha Green Hill Zone Act 1.
• 
  Mecha Green Hill Zone Act 2.
• 
  Mecha Green Hill Zone Act 3.
• 
  Aqua Planet Zone Act 1.
• 
  Aqua Planet Zone Act 2.
• 
  Aqua Planet Zone Act 3.
• 
  Electric Egg Zone Act 1.
• 
  Electric Egg Zone Act 2.
• 
  Electric Egg Zone Act 3.
• 
  Continue screen.
• 
  Game over screen.

Files

File Archive Contents

File	Type	Date	Size	SHA-1
Sonic Chaos (Jul 13, 1993 prototype).sms	File	2019-10-13 23:55:08	512 KB	982012a4868315c888c936ca3283fee8c5170cdf

Header

00007ff0 54 4d 52 20 53 45 47 41 ff ff 71 af ff ff ff 4f TMR SEGA..q....O

Origin

• 
  EPROMs.

See also

• The Cutting Room Floor