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Difference between revisions of "Sonic the Hedgehog 2 (8-bit)/Hidden content"

From Sonic Retro

m (Text replacement - "==Unused Artwork==" to "==Unused content==")
(Gimmick Mountain Name)
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Originally the level card for Gimmick Mountain wasn't going to have a shortened name. [[User:Hivebrain|Hivebrain]] discovered the word "Mountain" within the ROM. Due to lack of space on the screen Mountain was shortened to Mt.
 
Originally the level card for Gimmick Mountain wasn't going to have a shortened name. [[User:Hivebrain|Hivebrain]] discovered the word "Mountain" within the ROM. Due to lack of space on the screen Mountain was shortened to Mt.
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==Cheat device codes==
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These are cheat codes that can only be accessed with game enhancer devices. Support for these codes is available in most emulators.
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=== Game Genie ===
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==== Official codes, Game Gear Version ====
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{{CodeTable|official=yes|
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{{CodeRow|009-04F-3BE|Infinite lives.}}
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{{CodeRow|012-B8D-E66|Start with 1 life.}}
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{{CodeRow|052-B8D-E66|Start with 5 lives.}}
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{{CodeRow|092-B8D-E66|Start with 9 lives.}}
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{{CodeRow|A78-92C-19E|Invincible after 1 ring (Except on act 3).}}
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{{CodeRow|026-5ED-E6E|Each ring worth 2.}}
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{{CodeRow|036-5ED-E6E|Each ring worth 3.}}
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{{CodeRow|046-5ED-E6E|Each ring worth 4.}}
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{{CodeRow|056-5ED-E6E|Each ring worth 5.}}
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{{CodeRow|066-5ED-E6E|Each ring worth 6.}}
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{{CodeRow|076-5ED-E6E|Each ring worth 7.}}
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{{CodeRow|086-5ED-E6E|Each ring worth 8.}}
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{{CodeRow|3A7-E4C-2A2|Don't lose rings when hit.}}
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{{CodeRow|001-12D-3B7|Stop timer.}}
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{{CodeRow|3E2-E4D-3B4 + 012-E5D-E69|Start on Act 2.}}
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{{CodeRow|3E2-E4D-3B4 + 022-E5D-E69|Start on Act 3.}}
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}}
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=== Pro Action Replay ===
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==== Unofficial codes, Game Gear and Master System Version 1.0 and 2.2 ====
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{{CodeTable|
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{{CodeRow|00D3A9:15|Become Invincible After Being Hit.}}
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{{CodeRow|00D298:09|Infinite Lives.}}
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{{CodeRow|00D299:63|Infinite Rings (Press button 1 at end of level during score totaling).}}
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{{CodeRow|00D2BA:00|Keeps Time At Zero (Minutes).}}
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{{CodeRow|00D2B9:00|Keeps Time At Zero (Seconds).}}
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{{CodeRow|00D295:0?|Zone Select (Enable switch after the first 2 screens but before the level starts, after the level starts disable).
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*0: Underground
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*1: Sky High
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*2: Aqua Lake
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*3: Green Hills
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*4: Gimmick Mountain
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*5: Scrambled Egg
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*6: Crystal Egg}}
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{{CodeRow|00D296:0?|Act Select (Enable switch after the first 2 screens but before the level starts, after the level starts disable).
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*0: Act 1
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*1: Act 2
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*2: Act 3}}
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{{CodeRow|00D502:13|Start with Glider.}}
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}}
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==References==
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<references />
  
 
{{S2GGOmni}}
 
{{S2GGOmni}}
[[Category:Game secrets|Sonic the Hedgehog 2 (8-bit)]]
 

Revision as of 12:24, 7 April 2019

Unused content

Character Sprites

Artwork Name Description
S2tailseggfan.png "Crying Tails" Animations Some unused sprites of Tails crying. Probably meant to be used in the ending cutscene when he is rescued.
S2sonic.png Bored Sonic Animation These three animations are actually from Sonic 1 for the Master System, but were found in Sonic 2 for the Game Gear. Sonic 2 GG used Sonic 1 MS's spriteset, but the waiting animation was changed. This is all of what is leftover.
Sonic2SMSEarlyDeathSprite.png Sonic 1 death sprite Sonic's death sprite from the Master System version of Sonic 1.[1]
UZ Boss.png Entire Under Ground Zone Boss body The entire body of the boss can be seen here. Normally only its head is visible.
Duckgoose.png Entire Sky High Zone Boss body This shows the entire body of the boss. Normally only its head and neck can be seen.

Unused Monitors

Artwork Name Description
S2monitors1.png Sonic Monitor This one isn't really unused; you can find it hidden in a wall in Crystal Egg Zone, but the graphics are obscured. When collected, it grants a Continue.
S2monitors3.png Question Mark Monitor This may have given a random amount of rings or items, like in the 2-player mode of Sonic 2 for Mega Drive.
S2monitors2.png Grey Sneaker Monitor May have slowed you down, like the Slow sneaker in Sonic 3's 2-player mode.
S2monitors4.png Arrow Monitor This could have been a checkpoint marker, like the 8-bit version of Sonic 1.

Level Art

Artwork Name Description
UZ bricks.png Under Ground Zone Bricks Several unused bricks.
UZ loop.png Under Ground Zone Tubes Originally thought to be a loop, the discovery of a prototype revealed this to be the remains of Green hill zone style tubes for Under Ground Zone.
Sonic2GGUnderOther.png Various Under Ground Zone ground tiles Miscellaneous ground tiles.[2]
UZ platform.PNG Under Ground Zone Floating Platform An unused floating platform.
Boulder.png Sky High Zone boulder This boulder probably was supposed to roll down a hill in act 1.
S2 8bit skyhigh platform.png Sky High Zone platform An unused floating platform.
S2 8bit skyhigh block.png Sky High Zone object Probably another platform.
S2Aqua2.gif Unused Aqua Lake Zone tile A small additional piece of land which is not used in the final game.

Gimmick Mountain Name

S2mountain.png

Originally the level card for Gimmick Mountain wasn't going to have a shortened name. Hivebrain discovered the word "Mountain" within the ROM. Due to lack of space on the screen Mountain was shortened to Mt.

Cheat device codes

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

Game Genie

Official codes, Game Gear Version

Code Effect Reference
009-04F-3BE Infinite lives.
012-B8D-E66 Start with 1 life.
052-B8D-E66 Start with 5 lives.
092-B8D-E66 Start with 9 lives.
A78-92C-19E Invincible after 1 ring (Except on act 3).
026-5ED-E6E Each ring worth 2.
036-5ED-E6E Each ring worth 3.
046-5ED-E6E Each ring worth 4.
056-5ED-E6E Each ring worth 5.
066-5ED-E6E Each ring worth 6.
076-5ED-E6E Each ring worth 7.
086-5ED-E6E Each ring worth 8.
3A7-E4C-2A2 Don't lose rings when hit.
001-12D-3B7 Stop timer.
3E2-E4D-3B4 + 012-E5D-E69 Start on Act 2.
3E2-E4D-3B4 + 022-E5D-E69 Start on Act 3.

Pro Action Replay

Unofficial codes, Game Gear and Master System Version 1.0 and 2.2

Code Effect
00D3A9:15 Become Invincible After Being Hit.
00D298:09 Infinite Lives.
00D299:63 Infinite Rings (Press button 1 at end of level during score totaling).
00D2BA:00 Keeps Time At Zero (Minutes).
00D2B9:00 Keeps Time At Zero (Seconds).
00D295:0? Zone Select (Enable switch after the first 2 screens but before the level starts, after the level starts disable).
  • 0: Underground
  • 1: Sky High
  • 2: Aqua Lake
  • 3: Green Hills
  • 4: Gimmick Mountain
  • 5: Scrambled Egg
  • 6: Crystal Egg
00D296:0? Act Select (Enable switch after the first 2 screens but before the level starts, after the level starts disable).
  • 0: Act 1
  • 1: Act 2
  • 2: Act 3
00D502:13 Start with Glider.

References


Sonic the Hedgehog 2 (8-bit)
S2 sms title.png

Main page
Comparisons
Maps


Manuals
Promotional material
Magazine articles
Video coverage
Reception


Development
Hidden content
Bugs
Hacking guide