Actions

Sonic the Hedgehog (8-bit)/Hidden content

From Sonic Retro

(Redirected from Game Secrets:Sonic the Hedgehog (8-bit))

Unused content

Art

Found by contributors here and The Cutting Room Floor.[1]

Art Description
S1ancient.png
Ancient handled the 8-bit version of Sonic the Hedgehog and it looks like they intended to credit themselves on the title screen. Only Sega gets the credit in the final release.
S1 Totem.png
This graphic for the Green Hill Zone totem poles is used in the Master System version of the game, but is left unused in the Game Gear version.
Sonic1SMSGreen.png
A Green Hill Zone corner tile from the Master System version, left unused on the Game Gear.
Sonic1GGGreen.png
A checkered spike from the Game Gear version of the game.
S1 Enemy2.png
Newtron sprites found in the Master System version of Green Hill Zone. While the enemy appears in Jungle Zone, it uses different graphics.
S1Enemy3.png
Batbrain art which appears in the Game Gear version of Green Hill Zone but isn't used. It was probably meant to be in the caves of Act 2. In the 16-bit version this is a normal enemy in Marble Zone, a level not found in this version.
S1 BridgeLostObj.png
This appears amongst the object tiles for Bridge Zone, in both the Game Gear and Master System versions. It almost looks like the top is melted.
Sonic1SMSBridge.png
Spring in front of checkerboard pattern, and pole in front of sky tiles for Bridge Zone. The bridges in this zone are do not reach sky level. Found in both versions.
Sonic1SMSJungle.png
A horizontal spring without grass present, likely meant for act 2 of Jungle Zone. Found in both versions.
S1 LabyrinthLostObj.png
This appears amongst the object tiles for Labyrinth Zone in both the Game Gear and Master System versions. Perhaps it was intended to be a switch-operated door, like the ones in the Mega Drive version.
Sonic1SMSLabyrinth.png
Small and big pillars for Labyrinth Zone. No pillars like these exist in the 16-bit version of the level. Found in both versions of the game.
Sonic1SMSFinal.png
Slopes and laser turrets for Sky Base Zone act 3. The latter tiles are not in the Game Gear version.
Sonic1SMSSkyBase.png
Chain and unused cannon for Sky Base Zone.
S1roundthingv1.png
A prototype shield animation?

Marble Zone music

An 8-bit rendition of the Marble Zone music is present at $CD0A in the Sega Master System ROM. This and the unused sprite of Batbrain suggests that Marble Zone was possibly intended to appear in the 8-bit conversions, but was cut at some point. A ROM image with Green Hill Zone's music replaced with the Marble Zone music is available here.

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 1.0

Code Effect Reference
007-01A-3BE Unlimited lives.
093-7DE-E66 Start with 9 lives.
053-7DE-E66 Start with 5 lives.
013-7DE-E66 Start with 1 life.
020-54A-E6E Rings worth 2 points.
030-54A-E6E Rings worth 3 points.
040-54A-E6E Rings worth 4 points.
050-54A-E6E Rings worth 5 points.
060-54A-E6E Rings worth 6 points.
070-54A-E6E Rings worth 7 points.
080-54A-E6E Rings worth 8 points.
3A0-21C-2A2 Never lose rings.
003-F8C-3B7 Timer disabled.
2A2-86A-6E2 Infinite Air.

Official Codes, Game Gear version 1.1

Code Effect Reference
2A2-86A-6E2 Infinite Air.
003-8CE-5D4 + 013-88E-91A Start on Green Hill Zone, part 2.
003-8CE-5D4 + 023-88E-91A Start on Green Hill Zone, part 3.
003-8CE-5D4 + 033-88E-91A Start on Bridge Zone, part 1.
003-8CE-5D4 + 043-88E-91A Start on Bridge Zone, part 2.
003-8CE-5D4 + 053-88E-91A Start on Bridge Zone, part 3.
003-8CE-5D4 + 063-88E-91A Start on Jungle Zone, part 1.
003-8CE-5D4 + 073-88E-91A Start on Jungle Zone, part 2.
003-8CE-5D4 + 083-88E-91A Start on Jungle Zone, part 3.
003-8CE-5D4 + 093-88E-91A Start on Labyrinth Zone, part 1.
003-8CE-5D4 + 0A3-88E-91A Start on Labyrinth Zone, part 2.
003-8CE-5D4 + 0B3-88E-91A Start on Labyrinth Zone, part 3.
003-8CE-5D4 + 0C3-88E-91A Start on Scrap Brain Zone, part 1.
003-8CE-5D4 + 0D3-88E-91A Start on Scrap Brain Zone, part 2.
003-8CE-5D4 + 0E3-88E-91A Start on Scrap Brain Zone, part 3.
003-8CE-5D4 + 0F3-88E-91A Start on Sky Base Zone, part 1.

Pro Action Replay

Unofficial codes (Master System)

Code Effect
00D2D0:06 Freezes The Time.
00D246:09 Infinite Lives.
00D2AA:98 Infinite Rings.
00D2CF:00 Infinite Time.
00D284:09 Infinite Continues.
00D206:28 Infinite Shields.
00D208:01 Invincibility.
00D411:05 Have Speed Shoes (Turn off the code to resume to normal).
00D27F:06 Have All Chaos Emeralds (Enable and then disable code).
00D2EC:08 Boss Instant Defeat.
00D23E:?? Level Modifier (Turn off to continue to next level).
  • 00: Green Hill Zone 1
  • 01: Green Hill Zone 2
  • 02: Green Hill Zone 3
  • 03: Bridge Zone 1
  • 04: Bridge Zone 2
  • 05: Bridge Zone 3
  • 06: Jungle Zone 1
  • 07: Jungle Zone 2
  • 08: Jungle Zone 3
  • 09: Labyrinth Zone 1
  • 0A: Labyrinth Zone 2
  • 0B: Labyrinth Zone 3
  • 0C: Scrap Brain Zone 1
  • 0D: Scrap Brain Zone 2
  • 0E: Scrap Brain Zone 3
  • 0F: Sky Base Zone 1
  • 10: Sky Base Zone 2
  • 11: Sky Base Zone 3
  • 12: End Game

Unofficial codes (Game Gear)

Code Effect
00D2D1:06 Freezes The Time.
00D240:09 Infinite Lives.
00D2A9:63 Infinite Rings.
00D2D0:00 Infinite Time.
00D2D6:28 Infinite Shields.
00D209:01 Invinciblity.
00D412:05 Have Speed Shoes (Turn off the code to resume to normal).
00DC0A:02 Have Turbo Sneakers (Only way to use them in Game Gear).
00D279:06 All Emeralds (Enable and then disable code).
00D238:?? Level Modifier (Turn off to continue to next level).
  • 00: Green Hill Zone 1
  • 01: Green Hill Zone 2
  • 02: Green Hill Zone 3
  • 03: Bridge Zone 1
  • 04: Bridge Zone 2
  • 05: Bridge Zone 3
  • 06: Jungle Zone 1
  • 07: Jungle Zone 2
  • 08: Jungle Zone 3
  • 09: Labyrinth Zone 1
  • 0A: Labyrinth Zone 2
  • 0B: Labyrinth Zone 3
  • 0C: Scrap Brain Zone 1
  • 0D: Scrap Brain Zone 2
  • 0E: Scrap Brain Zone 3
  • 0F: Sky Base Zone 1
  • 10: Sky Base Zone 2
  • 11: Sky Base Zone 3
  • 12: End Game

References


Sonic the Hedgehog (8-bit)
Sonic 1 MS title.png

Main page
Maps
Comparisons


Manuals
Promotional material
Magazine articles


Development
Hidden content
Bugs
Hacking guide