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Sonic Chaos/Hidden content

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Level select

SonicChaos SMS LevelSelect.png
SonicChaos GG LevelSelect.png

On the main title screen, press Up Up Down Down Right Left Right Left, then either 1 or 2 for the Master System version, and Start for the Game Gear version. This is a variant of the Konami Code.

Sound test

SonicChaos SMS SoundTest.png
SonicChaos GG SoundTest.png

On the main title screen, press Down Down Up Up Left Right Left Right, then either 1 or 2 for the Master System version, and Start for the Game Gear version. Like the level select code, this is a variant of the Konami Code.

Hadouken

SonicChaosFireballMS.png
SonicChaosFireballGG.png

Activate the sound test, and press Down DownRight Right, then 1 or 2. This will make Sonic shoot a fireball from his hands, similar to Ryu from the Street Fighter series.

Free emerald

On the character select screen of the Game Gear version, press: Up Down Up Down 1 2 1 2 1 2. You'll kick your adventure off with one Chaos Emerald.

Unused content

Extra tiles in opening cutscene

SChaostails.png

In the opening cutscene, a sprite of Tails running can be found in the VRAM. However, when Tails is eventually revealed, he's walking, not running. Could it be possible that he was meant to run along with Sonic rather than walk after him when he goes off-screen?

Music

  • Sound code 08EH in the sound test is a short jingle that is not used in either version.
  • In the Game Gear version, sound code 09BH is unused in Sonic Chaos, but was later recycled for Sonic the Hedgehog Triple Trouble as the Sunset Park Zone Act 3 song.

Cheat device codes

These are cheat codes that can only be used with game enhancer devices. Support for these codes is available in most emulators.

Game Genie

Official codes, Game Gear Version

Code Effect Reference
008-3BD-E6E Infinite time.
022-1EC-E6E Each ring worth 2.
042-1EC-E6E Each ring worth 4.
062-1EC-E6E Each ring worth 6.
082-1EC-E6E Each ring worth 8.
0A2-1EC-E6E Each ring worth 10.
3A9-DCB-2A2 Never lose rings.
22A-91D-2A2 Start with some rings most of the time.
3A6-24E-2A2 Infinite lives.
016-93C-E66 Sonic starts with 1 life (Don't combine any of these lives altering codes with the "Start on Level" codes).
096-93C-E66 Sonic starts with 9 lives.
506-93C-E66 Sonic starts with 50 lives.
996-93C-E66 Sonic starts with 99 lives.
014-23E-E66 Sonic continues with 1 life.
094-23E-E66 Sonic continues with 9 lives.
504-23E-E66 Sonic continues with 50 lives.
994-23E-E66 Sonic continues with 99 lives.
016-99C-F7E Tails starts with 1 life.
096-99C-F7E Tails starts with 9 lives.
506-99C-F7E Tails starts with 50 lives.
996-99C-F7E Tails starts with 99 lives.
014-28E-F7E Tails continues with 1 life.
094-28E-F7E Tails continues with 9 lives.
504-28E-F7E Tails continues with 50 lives.
994-28E-F7E Tails continues with 99 lives.
1F6-9EC-08F + 996-A0C-F7D Sonic starts on Gigapolis Zone (Don't combine any of these lives altering codes with the "Start on Level" codes).
3D6-9EC-08F + 996-A0C-F7D Sonic starts on Sleeping Egg Zone.
006-9EC-08F + 996-A0C-F7D Sonic starts on Mecha Green Hill Zone.
3C6-9EC-08F + 996-A0C-F7D Sonic starts on Aqua Planet Zone.
056-93C-E66 + 006-9EC-08F + 996-A0C-F7D Sonic starts on Electric Egg Zone with 5 lives.
016-99C-F7E + 1F6-9EC-08F + 996-A0C-F7D Tails starts on Gigapolis Zone with 1 life.
1F6-9EC-08F + 996-A0C-F7D Tails starts on Sleeping Egg Zone.
036-99C-F7E + 006-9EC-08F + 996-A0C-F7D Tails starts on Mecha Green Hill Zone with 3 lives.
3D6-9EC-08F + 996-A0C-F7D Tails starts on Aqua Planet Zone.
006-9EC-08F + 996-A0C-F7D Tails starts on Electric Egg Zone.

Pro Action Replay

Unofficial codes, Game Gear Version

Code Effect Reference
00D3B1:01 Invincible After Being Hit Once.
00D29B:09 Infinite Lives.
00D29C:99 Infinite Rings (Change 99 to a lower value to avoid the Bonus Stage).
00D2C1:99 Infinite Time.
00D2CA:0? Character Modifier (1: Sonic, 2: Tails).
00D2D0:0? Cheat Enable Modifier (1: Zone Select, 2: Sound Test).
00D50C:95 High Jump (Enable during level).
00D299:0? Level Select. (Enable after intro)
  • 0: Turquoise Hill
  • 1: Gigapolis
  • 2: Sleeping Egg
  • 3: Mecha Green Hill
  • 4: Aqua Planet
  • 5: Electric Egg
00D740:00 No Enemies.

Unofficial codes, Master System

Code Effect Reference
00D3B1:01 Invincible After Being Hit Once.
00D299:09 Infinite Lives.
00D29A:99 Infinite Rings (Change 99 to a lower value to avoid the Bonus Stage).
00D50C:95 High Jump (Enable during level).
00D297:0? Level Select. (Enable after intro.)
  • 0: Turquoise Hill
  • 1: Gigalopolis
  • 2: Sleeping Egg
  • 3: Mecha Green Hill
  • 4: Aqua Planet
  • 5: Electric Egg

References


Sonic Chaos
Sonic Chaos title.png

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