Translations:Sonic the Hedgehog 2 (Genesis)/16/en

Other

Graphic	Name	Description
	HPZ Icon	A Level Select icon for Hidden Palace Zone. It is not normally used in any version of the game, but Pro Action Replay code 0096D8:0303 will cause it to replace the Emerald Hill icon in the Stage Select. It also appears in Sonic the Hedgehog 3's stage select, which contains icons for the Sonic 2 Zones. The final game's stage select wasn't implemented until Beta 7, while Hidden Palace itself was removed around the time of the Pre-Beta. Why this is here after the level was given up on, is anyone's guess.
	CPZ Decorative object	Unused decorative objects for Chemical Plant Zone, stored at 0x0383-0x0393 in VRAM. These can be placed in the iOS/Android 2013 version's debug mode.
	OOZ spring holder	A holder for the OOZ ball launcher (see below). This appeared in the Simon Wai prototype, and is still loaded into VRAM in the final game.
	Unused Aquis graphics	An unused animation for Aquis spitting up oil, along with an oil spray.
	Unused Balkiry frame	An unused frame of the Balkiry badnik from Sky Chase Zone with its landing gear deployed. It's possible that they were originally intended to take off from the Wing Fortress as it passed by. If a Balkiry is selected in debug mode, this sprite will be seen instead of its flying one.
	Walking Tocky	A walking animation for the Tockys in Sky Chase Zone. The only way to see this sprite is by using debug mode to create and destroy a badnik while the Wing Fortress passes by. This would later on make an appearance in Sonic Mania, shortly before the Metal Sonic boss battle at Stardust Speedway Zone.
	Picky	Picky, a returning animal from Sonic 1, is present in Death Egg Zone. However, there are no badniks or animal capsules, so he's never seen.

(Source: Sonic Retro)