Chemical Plant Zone

Located on West Side Island

Sonic the Hedgehog 2 (16-bit) - Chemical Plant Zone
"'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 the Hedgehog 2 (16-bit) instruction manual"

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 Zone; 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.

High-speed warp tubes, miscellaneous terrain features that suck the player in and deposit him/her 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.

Blocky collections of yellow/purple squares move back and forth periodically.

The rising pink chemical waters 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. 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.

Nearby

 * Emerald Hill Zone - Sonic the Hedgehog 2 (16-bit)
 * Aquatic Ruin Zone - Sonic the Hedgehog 2 (16-bit)