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

From Sonic Retro
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{{HiddenContent
 
{{HiddenContent
 
| title=Extra acceleration
 
| title=Extra acceleration
 +
| noimage=yes
 
| desc=Pressing {{left}} and {{right}} at the same time on the D-Pad will result in incredible acceleration and speed to the left. This is mainly useful in emulation (and has been extensively used in [http://tasvideos.org/1019M.html the Tool-Assisted Speedrun]), while it's unfeasible on a real unmodified console.
 
| desc=Pressing {{left}} and {{right}} at the same time on the D-Pad will result in incredible acceleration and speed to the left. This is mainly useful in emulation (and has been extensively used in [http://tasvideos.org/1019M.html the Tool-Assisted Speedrun]), while it's unfeasible on a real unmodified console.
 
}}
 
}}
  
 
==Unused content==
 
==Unused content==
−
===Character Sprites===
+
===Art===
−
{|class="prettytable"
+
{{UnusedTable|
−
!Artwork||Name||Description
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|S2tailseggfan.png}}
−
|[[Image:S2tailseggfan.png]]||"Crying Tails" Animations||Some unused sprites of Tails crying. Probably meant to be used in the ending cutscene when he is rescued.
+
| desc=Some unused sprites of Tails crying. Probably meant to be used in the ending cutscene when he is rescued.
−
|-
+
}}
−
|[[Image: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.
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|S2sonic.png}}
−
|[[File:Sonic2SMSEarlyDeathSprite.png]]||''[[Sonic the Hedgehog (8-bit)|Sonic 1]]'' death sprite||Sonic's death sprite from the Master System version of ''Sonic 1''.[http://tcrf.net/Sonic_the_Hedgehog_2_%28Sega_Master_System,_Game_Gear%29]
+
| desc=These three animations are from ''Sonic 1'' for the Master System, but were found in ''Sonic 2'' for the Game Gear.
−
|-
+
}}
−
|[[Image: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.
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|Sonic2SMSEarlyDeathSprite.png}}
−
|[[Image: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.
+
| desc=Sonic's death sprite from the Master System version of ''Sonic 1''.
−
|}
+
}}
−
 
+
{{UnusedRow
−
===Unused Monitors===
+
| sprite={{SpriteImage|UZ Boss.png}}
−
{|class="prettytable"
+
| desc=The entire body of the Under Ground Zone boss can be seen here. Normally only its head is visible.
−
!Artwork||Name||Description
+
}}
−
|-
+
{{UnusedRow
−
|[[Image: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]].
+
| sprite={{SpriteImage|Duckgoose.png}}
−
|-
+
| desc=The entire body of the Sky High Zone boss was also drawn. Normally only its head and neck can be seen.
−
|[[Image: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.
+
}}
−
|-
+
{{UnusedRow
−
|[[Image:S2monitors2.png]]||Grey Sneaker Monitor||May have slowed you down, like the Slow sneaker in ''Sonic 3'''s 2-player mode.
+
| sprite={{SpriteImage|S2monitors1.png|2}}
−
|-
+
| desc=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]].
−
|[[Image:S2monitors4.png]]||Arrow Monitor||This could have been a [[checkpoint]] marker, like the 8-bit version of ''Sonic 1''.
+
}}
−
|}
+
{{UnusedRow
−
 
+
| sprite={{SpriteImage|S2monitors3.png|2}}
−
===Level Art===
+
| desc=Question mark monitor, possibly set to give the player a random amount of rings or items, like in the 2-player mode of ''Sonic 2'' for Mega Drive.
−
{|class="prettytable"
+
}}
−
!Artwork||Name||Description
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|S2monitors2.png|2}}
−
|[[Image:UZ bricks.png]]||[[Under Ground Zone]] Bricks||Several unused bricks.
+
| desc=Grey Sneaker monitor which might have slowed you down, similar to the Slow sneaker in ''Sonic 3'''s 2-player mode.
−
|-
+
}}
−
|[[Image: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.
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|S2monitors4.png|2}}
−
|[[File:Sonic2GGUnderOther.png]]||Various Under Ground Zone ground tiles||Miscellaneous ground tiles.[http://tcrf.net/Sonic_the_Hedgehog_2_%28Sega_Master_System,_Game_Gear%29]
+
| desc=This could have been a [[checkpoint]] marker, like the 8-bit version of ''Sonic 1''.
−
|-
+
}}
−
|[[Image:UZ platform.PNG]]||Under Ground Zone Floating Platform||An unused floating platform.
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|UZ bricks.png}}
−
|[[Image:Boulder.png]]||[[Sky High Zone]] boulder||This boulder probably was supposed to roll down a hill in act 1.
+
| desc=[[Under Ground Zone]] Bricks.
−
|-
+
}}
−
|[[Image:S2 8bit skyhigh platform.png]]||Sky High Zone platform||An unused floating platform.
+
{{UnusedRow
−
|-
+
| sprite={{SpriteImage|UZ loop.png}}
−
|[[Image:S2 8bit skyhigh block.png]]||Sky High Zone object||Probably another platform.
+
| desc=The remains of Green hill zone style tubes for Under Ground Zone.
−
|-
+
}}
−
|[[Image:S2Aqua2.gif]]||Unused [[Aqua Lake Zone]] tile||A small additional piece of land which is not used in the final game.
+
{{UnusedRow
−
|}
+
| sprite={{SpriteImage|Sonic2GGUnderOther.png}}
 +
| desc=Miscellaneous Under Ground Zone tiles.
 +
}}
 +
{{UnusedRow
 +
| sprite={{SpriteImage|UZ platform.PNG|2}}
 +
| desc=Under Ground Zone floating platform.
 +
}}
 +
{{UnusedRow
 +
| sprite={{SpriteImage|Boulder.png}}
 +
| desc=[[Sky High Zone]] boulder, probably meant to roll down a hill in act 1.
 +
}}
 +
{{UnusedRow
 +
| sprite={{SpriteImage|S2 8bit skyhigh platform.png|2}}
 +
| desc=Sky High Zone platform.
 +
}}
 +
{{UnusedRow
 +
| sprite={{SpriteImage|S2 8bit skyhigh block.png|2}}
 +
| desc=Sky High Zone object - probably another platform.
 +
}}
 +
{{UnusedRow
 +
| sprite={{SpriteImage|S2Aqua2.gif}}
 +
| desc=Unused [[Aqua Lake Zone]] tile.
 +
}}
 +
}}
  
−
==Gimmick Mountain Name==
+
==Gimmick Mountain name==
−
[[Image:S2mountain.png]]
+
[[File:S2mountain.png]]
  
 
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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These are cheat codes that can only be accessed with game enhancer devices. Support for these codes is available in most emulators.
 
These are cheat codes that can only be accessed with game enhancer devices. Support for these codes is available in most emulators.
 
=== Game Genie ===
 
=== Game Genie ===
−
==== Official codes, Game Gear Version ====
+
==== Official codes, Game Gear version ====
 
{{CodeTable|official=yes|
 
{{CodeTable|official=yes|
 
{{CodeRow|009-04F-3BE|Infinite lives.}}
 
{{CodeRow|009-04F-3BE|Infinite lives.}}
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=== Pro Action Replay ===
 
=== Pro Action Replay ===
−
==== Unofficial codes, Game Gear and Master System Version 1.0 and 2.2 ====
+
==== Unofficial codes, Game Gear and Master System version 1.0 and 2.2 ====
 
{{CodeTable|
 
{{CodeTable|
 
{{CodeRow|00D3A9:15|Become Invincible After Being Hit.}}
 
{{CodeRow|00D3A9:15|Become Invincible After Being Hit.}}

Revision as of 12:35, 7 April 2019

Back to: Sonic the Hedgehog 2 (8-bit).
Sonic2SMSLevelSelect.png
Sonic2GGLevelSelect.png

When turning on the game hold UpLeft+12 until 2 ring noises chime.

Pressing Left and Right at the same time on the D-Pad will result in incredible acceleration and speed to the left. This is mainly useful in emulation (and has been extensively used in the Tool-Assisted Speedrun), while it's unfeasible on a real unmodified console.

Unused content

Art

Description
Some unused sprites of Tails crying. Probably meant to be used in the ending cutscene when he is rescued.
These three animations are from Sonic 1 for the Master System, but were found in Sonic 2 for the Game Gear.
Sonic's death sprite from the Master System version of Sonic 1.
The entire body of the Under Ground Zone boss can be seen here. Normally only its head is visible.
The entire body of the Sky High Zone boss was also drawn. Normally only its head and neck can be seen.
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.
Question mark monitor, possibly set to give the player a random amount of rings or items, like in the 2-player mode of Sonic 2 for Mega Drive.
Grey Sneaker monitor which might have slowed you down, similar to the Slow sneaker in Sonic 3's 2-player mode.
This could have been a checkpoint marker, like the 8-bit version of Sonic 1.
Under Ground Zone Bricks.
The remains of Green hill zone style tubes for Under Ground Zone.
Miscellaneous Under Ground Zone tiles.
Under Ground Zone floating platform.
Sky High Zone boulder, probably meant to roll down a hill in act 1.
Sky High Zone platform.
Sky High Zone object - probably another platform.
Unused Aqua Lake Zone tile.

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
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Magazine articles
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