|Chemical Plant Zone|
|Name||Chemical Plant Zone|
|Franchise||Sonic the Hedgehog|
|Quests||Eggman's Master Plan|
Chemical Plant Zone is the second Zone in Sonic the Hedgehog 2. As with most other Zones in this game, the Chemical Plant Zone consists of two standard Acts with a boss fight at the end of Act 2, Water Eggman.
Chemical Plant Zone takes place in an industrial cityscape, filled with blue toxic gloop, mechanical creatures, and twisting chemical pipes. Some players consider this level disproportionately difficult, given that it's only the second stage; it has many difficult obstacles, often requiring fast reflexes, such as you having to jump very quickly over the gloop. There are still some loops, and other places where you can gain lots of speed. It is actually possible to outrun the screen sometimes.
Suction tubes, miscellaneous terrain features that suck you in and deposit you at the other side of the tunnel, wind across the level. These cause no damage nor have any effects other than transportation. Yellow-clad pipes filled with blue chemicals spiral through almost the whole map. They can have very steep drops and may climb after a drop. These can sometimes end badly, such as if one throws you onto a cliff into the water. To avoid dangers from these, stay alert while moving.
Blocky collections of yellow/purple squares move back and forth periodically. You must jump onto them and then jump onto either the other square next to it or solid ground. These require a knowledge of the game physics and quick reflexes. For players who do not have these, the moving squares can be the hardest part of the level.
The rising pink chemical waters (a substance unnamed in the game but known as Mega Mack in Sonic the Comic and in the manual for the original game) during Act 2 sees the water level rising and the only way to escape to land is by climbing up shifting blocks, as explained above. This is a very dangerous segment, as you are not only at risk of drowning, but also at risk of being crushed by the rotating blocks. However, it is easily evadable and completely skippable if the right path is taken.
There's also the ever-delightful blue chemical jets; these require very quick reflexes, as they are incredibly deadly. They are jets of sludge that shoot from one tube to another, or in a parabolic path. These cannot be destroyed, so just run past them and hope that you survive.