Chemical Plant Zone (Sonic Mania)

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Sonic Retro emblem.svg Sonic Mania
Chemical Plant Zone
  • Act 1
  • Act 2
Chemical Plant Zone
Second level, Sonic Mania
Number of Acts: 2
Level theme: industrial
Sub-boss: Amoeba Droid
Boss: Mean Bean Machine
Underwater areas: Act 1 only
Non-English names:
  • JP: ケミカルプラント Kemikaru Puranto
Green Hill Zone | Studiopolis Zone

Chemical Plant Zone is the second zone in Sonic Mania, which is based on Chemical Plant Zone from Sonic the Hedgehog 2. The player is sent here by the power of the Phantom Ruby at the hands of Dr. Eggman.


Act 1 is very similar to the original and incorporates level design from both acts of the original, with winding passageways, pipes, harmful chemical balls, and, of course, Mega Mack. New additions include an entirely new bottom route and Metallic Madness-style pipes where you choose your own path.

Act 2 has Sonic and the gang exploring deeper into the plant to an indoor section, with large beakers and jars present in the background. The blue chemical that composes the ball snakes from Act 1 now appear in large pools. By standing on giant syringes, this hazardous fluid can be transformed into a gelatinous substance that can be bounced on, propelling you high into the air. Along the way you'll find large DNA strands that carry the player through the air, encased in a bubble of Mega Mack. Sticky platforms that slide across walls and ceilings can be clinged to and jumped off of to move to different areas of the Act.

After defeating the boss of the zone, the player takes a transport tube that leads to Studiopolis Zone.


References and Easter eggs

Reference Appears in Source Game Source Level
Sonic's animation when he shakes off the purple chemical drop (instead of water like in Toxic Caves). Act 1 Sonic Spinball Toxic Caves
Pipes where the player can choose their path. Act 1, Act 2 Sonic the Hedgehog CD Metallic Madness Zone
Mini-Boss resembling the Ice Cap Zone's Big Icedus but rotated and using chemicals instead of ice balls. Act 1 Sonic the Hedgehog 3 Ice Cap Zone
Catakiller, Jr.'s appearance. Act 2 Sonic the Hedgehog 3 Angel Island Zone
Bouncy chemicals which work exactly like floor in Wacky Workbench Zone. Act 2 Sonic the Hedgehog CD Wacky Workbench Zone
Coiled tubes but clear. Act 2 Sonic the Hedgehog CD/Sonic the Hedgehog 3 Quartz Quadrant Zone/Carnival Night Zone
Groups of blocks that lower themselves when hit from underneath. Act 2 Sonic the Hedgehog (16-bit) Star Light Zone
The entire boss fight with changed gameplay to that of Puyo Puyo/Dr. Robotnik's Mean Bean Machine, along with a remixed version of the track "Final of Puyo Puyo"/"2 Player vs.". Act 2 Puyo Puyo/Dr. Robotnik's Mean Bean Machine Stage 13



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