Sonic the Hedgehog 2 (Sega Master System, Game Gear)
|Sonic the Hedgehog 2|
This game has a prototype article
Sonic the Hedgehog 2: featuring Tails as Princess Peach!
|"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.|
|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.|
There are many more.
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."
A build date string can be found in the ROM at 0x000C0.
|Master System (REV00)|| |
MS SONIC THE HEDGEHOG.2 Ver1.00 1992/09/05 SEGA /Aspect Co.,Ltd
|Game Gear|| |
GG SONIC THE HEDGEHOG.2 Ver1.10 1992/09/12 SEGA /Aspect Co.,Ltd
|Master System (REV01)|| |
MS SONIC THE HEDGEHOG.2 Ver2.20 1992/12/09 SEGA /Aspect Co.,Ltd
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.
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.
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.
This section is WIP: add more detail, elaboration, rip the alternate boss/Power Sneakers/good ending themes and confirm if any of the exclusive music exists as unused leftovers, 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.
- Sonic's ledge animation is slower on Game Gear.
- 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.
- 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 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.
- When Sonic (and Tails) look upon the stars at the end of the credits, a sound effect is now played.