Sonic the Hedgehog 2 (Sega Master System, Game Gear)
|Sonic the Hedgehog 2|
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||Three frames from Sonic 1 for the Master System. While the 8-bit versions of Sonic 2 used the spritesheet of the 8-bit Sonic 1, the waiting animation was changed. Hence, these are unused.|
|Early Death Sprite||An early version of the death sprite. Sonic's shoes have no stripe and are outlined.|
|Underground 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 Slow 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:
MS SONIC THE HEDGEHOG.2 Ver1.00 1992/09/05 SEGA /Aspect Co.,Ltd
GG SONIC THE HEDGEHOG.2 Ver1.10 1992/09/12 SEGA /Aspect Co.,Ltd
A peaceful, ethereal-sounding tune. What this song could have been used for is unknown.
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.