Static // Dynamic

Lost Sprites and Tiles

Thanks to the science of hacking, sprites and tiles that are hidden in the prototype ROM file can be recovered. Note that some palettes may be incorrect!

Sprite/Tile	Nicknames	Hex Address	Discovered By
	Spring monitor	?	<Too long ago>
	It's rumored that this would attach a spring under Sonic's shoes, like in Sonic Triple Trouble.
	Fish, Piranha	$7B4EA	Esrael
	Bubbler's Mother, Three-eyed Fish, Tri-eye, Blinky	$7C0C6	Esrael
	This multi-eyed creature would drop Bubbler onto the ground in Chemical Plant Zone, as illustrated by the concept art.
	Bubbler	$7C2F2	Esrael
	This lump of bubbles would appear in Chemical Plant Zone and burst when Sonic is near. According to concept art, it is supposed to be purple in color. This enemy would be dropped by Bubbler's Mother.
	Bouncer, Crawl	$7C710	Esrael
	Trycerobot, Rhinobot	$7AD18	Esrael
	OOZ Seahorse	$7B9E2	Esrael
	The seahorses shoot oil balls at Sonic when approached. Their behavior can be seen in Esrael's hack, Sonic 2 Delta.
	OOZ Octopus	$7A9F8	Esrael
	This is not your usual octopus seen in OOZ. When it sees Sonic, it fires a glowing bullet and then quickly flies away horizontally. Again, this can be seen in Esrael's hack. The palette shown here is wrong—the octopus looks pink, as usual, under OOZ's palette.
	Lamppost, Restart point	$79278	<viewable via debug>
	Fireball, Log on fire	$7436C	Nemesis
	Possibly part of a burning bridge after destroyed by yet another scrapped enemy, the Bee. "I'm not entirely sure if this is a fireball or a burning log. The main area in the center that's black uses the second colour on the palette line, which is a dull colour on every palette in the beta, rather than an intense red that you would expect." ― Nemesis
	Ball	$7BE30	Esrael
	This ball is believed to supposedly bounce and crush Sonic.
	HPZ alpha background backdrop	$2B06A	BMF54123
	EveryNameWasTaken noticed this thing matches with the holes in the background of the mock-up Hidden Palace picture. Click here for more info.
	Drill, Rotating screw	$2A86A	Dr. Ivo
	Splashing rock	$4B76C	Dr. Ivo
	Flame anchored on brick wall	$4E86A	Dr. Ivo
	"You know that one with the fire in the pot against the stone wall? That actually wasn't compiled in our version of the rom, but is merely left over from a previous build." ― Nemesis, ROM Hacker @ Area 51 phpBB (defunct) These two tiles do not belong to a Sonic game. Click here for more info.
	Lost CPZ Boss, Splattered Robotnik	$7D3DA	Knuckles Prower
	It's possible that this sprite would be displayed when Robotnik is hit or defeated in CPZ.
	Sonic ledge animation	?	?
	Sonic sitting down, rotating, and pulling	?	Scott Prower

While it's quick to browse through the list of pictures, remember these discoveries are made possible by hackers who spent hours and hours to dissect and study the ROM image. My thanks go to everybody in the Sonic Hacking scene.