Game Description: Sonic The Hedgehog 2 is an action platformer game for the Sega Game Gear.
Run, jump, dash and spin through the levels as you control the blue hedgehog Sonic. Thwart the plans of Dr. Robotnik together with your friend Tails in Sonic the Hedgehog 2! Free the kidnapped animals and collect the golden rings!
Sonic the Hedgehog 2 is a classic arcade game for the SEGA Genesis console. In this game, a new friend was introduced by the name of “Tails”. In this 1992 game, you must once again control the super quick Sonic and battle against the evil and nefarious Dr. Robotnik who have kidnapped all the animals for his experiments. The game features dozens of new levels and new challenges, as well as new enemies to face. The fast gameplay, smooth control, and nice scene transition makes this game highly addicting even for today’s standards. Have fun!
Sonic the Hedgehog 2 ROM Download for Sega Game Gear - CoolROM.com NOTE: Play this ROM on your PC by using a compatible emulator. Play Sonic the Hedgehog 2 emulator game online in the highest quality available. Sonic the Hedgehog 2 is a Sega Genesis game that you can enjoy on Play Emulator. This SEGA game is the US English version that works in all modern web browsers without downloading.
Click inside the screen to activate controls
Sonic 2 Game Gear Rom
Controls
Arrow Keys – Directional Buttons / Movement
Press “Z” Key – A button
Press “X” Key – B button
Space – Select
Enter – Start
To save your game:hover over the emulator screen and use the icons to save your progress.
Down arrow icon (save), Up arrow icon (load).
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Sonic the Hedgehog 2 |
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Developer: Aspect This game has hidden development-related text. |
Sonic the Hedgehog 2: featuring Tails as Princess Peach!
- 1Unused Graphics
- 5Level Select
Unused Graphics
Character Sprites
Artwork | Name | Description |
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'Crying Tails' Animation | Tails crying. Probably meant to be used in the ending cutscene when he is rescued. | |
'Bored Sonic' Animation | While the majority of the game's Sonic graphics were copied from the Master System version of the first game, the waiting animation was changed, rendering these three frames unused. They were used in the AutoDemo prototype, though. | |
Sonic 1 Death Sprite | Sonic's death sprite from the Master System Sonic 1. The final version uses an updated sprite. | |
Under Ground Zone Boss body | The entire body of the boss. Normally, only its head is visible. | |
Sky High Zone Boss body | The entire body of the boss. Normally, only its head and neck can be seen. |
Monitors
Artwork | Name | Description |
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Sonic Monitor | While you can find this in a wall in Crystal Egg Zone, the graphics are obscured. When collected, it grants a continue. | |
Question Mark Monitor | May have given a random amount of rings or items, like in the 2-player mode of the Genesis version. | |
Grey Sneaker Monitor | May have slowed you down, like the Speed-Down sneaker in the 2-player mode of Sonic 3. | |
Arrow Monitor | Most likely intended to be a checkpoint marker, like the 8-bit versions of Sonic 1. |
Level Art
To do: There are many more. Sky High Zone Act 2, Aqua Lake Zone Act 1 & 3, and Act 2, Green Hills Zone, Gimmick Mountain Zone, Scrambled Egg Zone Acts 1 & 3, and Act 2, and Crystal Egg Zone Acts 1 & 2 all have many unused tiles! |
Artwork | Name | Description |
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Under Ground Zone Bricks | Several unused bricks. Tiles similar to the gray bricks were used in the AutoDemo prototype, but they were removed by the final version. | |
Under Ground Zone Tunnel | Leftovers from the curved tunnels found in the AutoDemo prototype. | |
Under Ground Zone rock | A 32x32 rock that was used in the AutoDemo prototype. | |
Under Ground Zone Tiles | Miscellaneous unused pieces. | |
Under Ground Zone Floating Platform | An unused floating platform. | |
Sky High Zone boulder | This boulder was probably supposed to roll down a hill in Act 1. | |
Sky High Zone platform | Another unused floating platform. | |
Sky High Zone object | Unknown purpose - another platform? | |
Sky High Zone water | Water tiles that were supposed to appear in Act 2. They look similar to the tiles found in the AutoDemo prototype. | |
Sky High Zone trees | The trees from Act 1 were apparently supposed to appear in Act 2, but they don't. | |
Sky High Zone background | An unused 32x32 background tile that was supposed to appear in Act 2. | |
Aqua Lake Zone block | A small additional piece of land. If placed in Act 2, these are fully functional and cause Sonic to slide down much like Labyrinth Zone in Sonic the Hedgehog. | |
Aqua Lake Zone waterfall | This waterfall tile was probably gonna be used with the block above. | |
Aqua Lake Zone spikes | Unused spikes that were supposed to appear in Act 1 and 3. The only spikes found in this zone are underwater. | |
Green Hills Zone grass | While the miscolored grass tile on the left is used in game, an unused, properly colored grass tile exists. | |
Green Hills Zone tiles | Unused graphics for background scenery that look like a flower stem. | |
Green Hills Zone spring | A diagonal spring in front of the scenery that isn't used anywhere. | |
Gimmick Mountain Zone breakable block | A breakable 32x32 tile that isn't used anywhere in the level. | |
Scrambled Egg Zone breakable block | A breakable 32x32 tile that looks very similar to the Gimmick Mountain one, still unused. | |
Crystal Egg Zone background tiles | Mountain background tiles that aren't used anywhere. | |
Crystal Egg Zone tiles | Scenery tiles that aren't used anywhere. | |
Crystal Egg Zone flower | An unused flower. |
Gimmick Mountain Title Card
Originally, the level card for Gimmick Mountain Zone used its full name. Due to lack of space on the screen, however, 'Mountain' was shortened to 'Mt.'
Sonic Drift 2 Rom
Unused Text
A build date string can be found in the ROM at 0x000C0.
Master System (REV00) |
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Game Gear |
Master System (REV01) |
Unused Music
A peaceful, ethereal-sounding tune. What this song could have been used for is unknown, but it might have been an early theme for Crystal Egg due to the similar style. The song also has some resemblance to the present theme of Tidal Tempest in the Japanese/European soundtrack of Sonic CD. This song was removed from the Game Gear version, and was replaced by the sound effect that plays when Sonic (and Tails) look up at the stars at the end of the credits. Both of them use $92 as the song value.
Level Select
Master System
While powering on the game, hold Left + 1 + 2 on Controller 2. When the intro sequence starts, release the buttons, then start the game as usual.
Game Gear
When the intro starts, hold Down + Left + 1 + 2 + Start. When the title screen appears, wait for a ring sound to play twice (Tails will wink three times). Release all the buttons and press Start.
Version Differences
To do: This section is WIP: add more detail, elaboration, rip the alternate boss/Power Sneakers/good ending themes, document revision 2.2 of the Master System version, etc. |
The 8-bit versions of Sonic the Hedgehog 2 are mostly identical, but besides the resolution, there are some differences detailing the transition from Master System to Game Gear:
- The intro originally started with Tails already kidnapped. On handheld, it starts off with Tails running away as Robotnik's claw catches him. The sky in the intro also changed from a bright cyan to a very dark shade.
- The music during the Master System intro is the title screen music of the Game Gear version; the Master System title screen plays no music, and the Game Gear intro plays the Scrambled Egg Zone track.
- The boss music is different between versions, with the Game Gear version noticeably being mixed into the JP Metallic Madness from Sonic the Hedgehog CD. The Master System boss music was removed completely from the Game Gear version, however, the Game Gear boss music does not use the same sound value as the Master System version. The Master System boss music is $89, but the Game Gear boss music is $94. Attempting to play $89 on the Game Gear version crashes the game.
- Several small changes are present to level geometry and ring layouts across the game. A notable example is a set of rings in Green Hills Zone spelling the word 'END' (one of the level designers listed in the credits) was added. These changes are minor and don't appear to be done to make the stages easier to navigate with the restricted view as per the stage changes in the Game Gear version of Sonic the Hedgehog.
- The geometry of several boss fight areas were made smaller to accommodate the smaller fixed screen. For example, the Green Hills arena is much narrower, and Crystal Egg's boss makes the horizontal pipe exit on the left invisible.
- Several boss fights are more difficult. Under Ground's boss now has the rocks bounce at unpredictable heights, Aqua Lake's boss continually moves towards Sonic, forcing him to jump and be bounced away before the orange sphere attack, and Green Hills' boss will now sometimes combine a high leap with a low roll attack rather than just doing one or the other. Crystal Egg's boss is not necessarily harder, but it does not follow exactly the same attack pattern as the Master System version, i.e. if one attacks it during the optimal openings on each play, it will result in the battle playing out exactly the same every time, but those openings and thus exactly the same scenario differs for each version.
- In the Master System version of Aqua Lake Zone Act 2, the entire level is a murky green palette, and the waterline is invisible and at a fixed position near the top; on Game Gear, clean blue water visibly rises and floods the entire stage at the start.
- When Sonic drowns in the Master System version, he sinks with his mouth opening and closing, like the Master System version of the previous game; on Game Gear, he sinks with his mouth open, as in the console games.
- Power Sneakers exist as a one-off powerup in the Master System version, only appearing in Aqua Lake Zone Act 2. When this monitor is broken, a unique track is temporarily played, but it otherwise does not provide its usual speed-up effect. Likely because of this odd oversight, it is replaced by a Super Ring monitor in the Game Gear version. The song was also removed completely from the Game Gear version, and crashes if attempted to play.
- The sound effect when Sonic spins on the wheels and orb in Gimmick Mountain and Crystal Egg is different.
- On Game Gear, 'HIRO SSS' is credited in place of 'SEMIMARU' and 'TOSIYAN' is corrected to 'TOSHIYAN' for the Program, and there is an extra credit for 'RYU' under Thanks.
- The bad ending music is extended on Game Gear, while it cuts short on Master System.
- The good ending has its own, happy-sounding tune on Game Gear. This song does not exist at all on the Master System Version. This song's value on the Game Gear is $95.
- When Sonic (and Tails) look upon the stars at the end of the credits, a sound effect is now played. This sound replaces the unused track ($92) from the Master System version.
- When Sonic enters the tube that leads to Scrambled Egg's boss arena in the Game Gear version, the boss music starts playing immediately, where in the Master System version, it starts just as Sonic exits the tube.
- The end of act tally counts down points slower in the Game Gear version.
Sonic 1 Game Gear Download
The Sonic the Hedgehog series | |
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Sega Genesis | Sonic the Hedgehog • Sonic the Hedgehog 2 (Prototypes) • Sonic the Hedgehog 3 (Prototype) • Sonic & Knuckles (Prototypes) • Sonic 3 & Knuckles • Sonic 3D Blast (Prototypes) • Sonic Spinball (Prototype) Dr. Robotnik's Mean Bean Machine (Prototype) • Sonic Classics |
Sega Master System | Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic Chaos (Prototypes) • Sonic Blast • Sonic Spinball Dr. Robotnik's Mean Bean Machine • Sonic's Edusoft |
Game Gear | Sonic the Hedgehog (Prototype) • Sonic the Hedgehog 2 (Prototype) • Sonic Chaos (Prototypes) • Sonic Triple Trouble (Prototypes) Sonic Spinball (Prototype) • Sonic Drift 2 • Sonic Labyrinth • Sonic Blast (Prototypes) Dr. Robotnik's Mean Bean Machine • Tails' Skypatrol • Tails Adventures |
Arcade | SegaSonic Cosmo Fighter • SegaSonic the Hedgehog (Prototype) • Sonic Championship • SegaSonic Bros. |
Sega CD | Sonic the Hedgehog CD (Prototypes) |
32X | Knuckles' Chaotix (Prototypes) |
Sega Pico | Sonic the Hedgehog's Gameworld • Tails and the Music Maker (Prototypes) |
Windows | Sonic the Hedgehog CD (1996, 2011) • Sonic's Schoolhouse • Sonic & Knuckles Collection • Sonic 3D Blast • Sonic R Sonic Heroes • Sonic Riders • Sonic Adventure DX: Director's Cut (2004, Demo, 2011) • Sonic Adventure 2 Sonic the Hedgehog 4 - Episode I (Prototypes) • Sonic the Hedgehog 4 - Episode II (Prototype) • Sonic Generations (Demos) • Sonic Lost World • Sonic Mania • Sonic Forces • Sonic & Sega All-Stars Racing • Sonic & All-Stars Racing Transformed • Team Sonic Racing |
Sega Saturn | Sonic X-treme • Sonic 3D Blast (Prototype) • Sonic Jam (Prototype) • Sonic R (Preview) |
Game.com | Sonic Jam |
Dreamcast | Sonic Adventure (Prototypes) • Sonic Adventure 2 (Prototypes) • Sonic Shuffle (Debug Version) |
Neo Geo Pocket Color | Sonic the Hedgehog Pocket Adventure (Prototypes) |
Game Boy Advance | Sonic Advance (Prototype) • Sonic Advance 2 • Sonic Advance 3 (Prototype) • Sonic Battle • Sonic the Hedgehog Genesis |
GameCube | Sonic Adventure 2: Battle (Demo) • Sonic Adventure DX: Director's Cut (Prototypes) • Sonic Heroes (Prototypes) Shadow the Hedgehog • Sonic Mega Collection (Prototype) • Sonic Gems Collection • Sonic Riders |
PlayStation 2 | Sonic Heroes • Shadow the Hedgehog • Sonic Riders • Sonic Riders: Zero Gravity • Sonic Unleashed • Sonic Gems Collection |
Xbox | Sonic Heroes • Shadow the Hedgehog • Sonic Riders |
Nintendo DS | Sonic Rush (Demo) • Mario & Sonic at the Olympic Games (Beijing 2008) • Sonic Chronicles: The Dark Brotherhood Sonic & SEGA All-Stars Racing • Sonic Classic Collection |
PlayStation Portable | Sonic Rivals |
Xbox 360 | Sonic the Hedgehog (Demo) • Sonic Unleashed (Preview) • Sonic & Sega All-Stars Racing • Sonic the Hedgehog 4 - Episode I (Prototypes) • Sonic Generations (Demos) • Sonic Adventure 2 • Sonic & All-Stars Racing Transformed |
Wii | Sonic Unleashed • Sonic Colors • Beijing 2008 • London 2012 • Sonic the Hedgehog 4 - Episode I (Prototypes) • Sonic & Sega All-Stars Racing • Sonic and the Black Knight • Sonic Riders: Zero Gravity |
PlayStation 3 | Sonic the Hedgehog • Sonic the Hedgehog 4 - Episode I (Prototypes) • Sonic Adventure 2 • Sonic Generations (Demos) • Sonic & All-Stars Racing Transformed |
Nintendo 3DS | Sonic Generations • Sonic & All-Stars Racing Transformed |
Wii U | Sonic Lost World • Sonic Boom: Rise of Lyric • Sonic & All-Stars Racing Transformed |
Nintendo Switch, PlayStation 4, Xbox One | Sonic Mania |
J2ME | Sonic the Hedgehog Mobile • Sonic Jump |
Leapster | Sonic X |
N-Gage | Sonic N |
iOS/Android | Sonic the Hedgehog 4 - Episode I (Prototypes) • Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic the Hedgehog CD Sonic Jump • Sonic Dash • Sonic Runners |
Plug & Play | Super Sonic Gold |