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Chemical Plant Zone
Second level, Sonic the Hedgehog 2 Number of Acts: 2 Level theme: industrial Boss: Water Eggman Maximum Rings, Act 1: 195 + 130 Maximum Rings, Act 2: 157 + 140 Underwater areas: Act 2 Music: Level icon:

"Chemical Plant" redirects here. For the Sonic Generations level, see Chemical Plant (Sonic Generations)

The second zone in Sonic 2, Chemical Plant Zone is Dr. Robotnik's chemical plant, full of tubes and floating platforms. He uses a new substance called "Mega Mack" to try to kill Sonic. The zone shares palettes and tiles with Robotnik's Death Egg Zone.

Instruction Manual Description

“	Flash through a high-tech maze built with pipes and ducts. Robotnik's flooded the factory with a pool of toxic liquid called "Mega Mack" that poisons Sonic in a few moments!	„
—Sonic 2 US Manual, p. 12

Sonic Team Commentary (from Sonic Jam Strategy Guide)

“	At first this stage was set to appear about after Zone 10. Although there would be fewer Acts this time, we thought having about 18 zones would be good, but having each zone stand out and fit in the story in a way that was easy to follow, in the end it dropped down to 11 zones, and Chemical Plant was placed as the second stage. In the end, it was a success (laughs).	„
—Yuji Naka

Enemies

• Grabber - Spider enemy, hangs from the ceiling and grabs Sonic. Then unless Tails can destroy the Grabber, it explodes and hurts/kills Sonic.
• Lander - Anemone enemy, moves very slowly and spits out missiles.

Technical Information

Offset	Description
0D	CPZ Level Value
$2E02	CPZ Palette
$2E62	CPZ Underwater Palette
$D27C	CPZ layer deformation info
$401B2	CPZ animated pattern load cue (0)
$40762	CPZ misc sprite mappings
$42376	CPZ object debug list
$453C0	CPZ and DEZ primary 16x16 collision index
$454E0	CPZ and DEZ secondary 16x16 collision index
$48774	CPZ act 1 level layout
$48A84	CPZ act 2 level layout
$4FAFE	Animated background section in CPZ and DEZ
$B5234	CPZ/DEZ 16x16 block mappings
$B6174	CPZ/DEZ main level patterns
$B90F4	CPZ/DEZ 128x128 block mappings
$E5E2C	CPZ act 1 ring locations
$E5F9E	CPZ act 2 ring locations

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Sonic the Hedgehog 2 (16-bit)

Sonic 2 Main (KiS2 | 2013 | 3D) Levels Enemies Bosses Bug List Prereleases Music: OSV / OST Level Maps Cheat Codes (KiS2) Commercials Print Advertisements Magazine Articles Game Development Game Secrets (2013) SCHG

Regular Levels: Emerald Hill Chemical Plant Aquatic Ruin Casino Night Hill Top Mystic Cave Hidden Palace Oil Ocean Metropolis Sky Chase Wing Fortress Death Egg Special Stage Scrapped Levels: Dust Hill Zone | Genocide City/Cyber City Zone | Rock Zone | Winter Zone | Wood Zone Advertisements: Sonic Mall Hot Hot Hot Welcome to the Next Level To see all print and TV advertisements, visit the Advertisements page. Enemies and Obstacles: Aquis Asteron Balkiry Buzzer Chop Chop Clucker Coconuts Crawl Crawlton Flasher Grabber Grounder Masher Nebula Octus Rexon Shellcracker Slicer Sol Spiker Spiny Turtloid Whisp Scrapped Enemies and Obstacles: Banper BBat Bee BFish Bubbler Bubbler's Mother Frog Gator Redz Snail Stegway Others Bosses: Drill Eggman (EHZ) Water Eggman (CPZ) Hammer Eggman (ARZ) Catcher Eggman (CNZ) Submarine Eggman (HTZ) Drill Eggman II (MCZ) Brass Eggman (HPZ) Submarine Eggman II (OOZ) Flying Eggman (MZ) Barrier Eggman (WFZ) Mecha Sonic (DEZ) Giant Mech (DEZ) Cheat Codes: These are cheat codes which can be accessed by inputting button sequences or by various other methods. Note: in cheat codes, + signifies that the buttons must be held simultaneously. Zone Select: Play tunes 19, 65, 09, 17 on the options screen, + on title screen. 14 Continues: Play tunes 01, 01, 02, 04 on the options screen. An incorrect sound command is issued, causing OOZ music to continue playing until a reset. Super Sonic: Play tunes 04, 01, 02, 06 on the zone select sound test, an emerald sound triggers, select zone, hold until Sonic appears. Debug mode + Slow-motion/Restart: Play tunes 01, 09, 09, 02, 01, 01, 02, 04 on the zone select sound test, a ring sound triggers, select zone, hold until Sonic appears. Super Sonic + Debug: Play tunes 01, 09, 09, 02, 01, 01, 02, 04, 01, 02, 06 on the zone select sound test, a ring sound triggers after 04 and an emerald sound triggers after 06, select zone, hold until Sonic appears. For a list of all codes, see Cheat Codes:Sonic the Hedgehog 2 (16-bit).