Chemical Plant Zone
From Sonic Retro
| Chemical Plant Zone |
|---|
| Second level, Sonic the Hedgehog 2 |
| Number of Acts: 2 |
| Boss: Chemical Plant Zone Boss |
| Underwater areas: Act 2 |
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.
Contents
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!
Enemies
- Grabber - Spider enemy, hangs from the ceiling and grabs Sonic. Then unless Tails can destroy the Grabber, it explodes and hurts/kills Sonic.
- Spiny - Anemone enemy, moves very slowly and spits out missiles.
Differences between beta and final
- The loop-de-loop platforms have octagonal edges instead of being flat.
- The platforms which move across rails (most noticeably in Act 2) are much smaller.
Technical Information
| 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 |