Aquatic Ruin Zone

Aquatic Ruin Zone is the third zone in Sonic 2.

Instruction Manual Description

Roaming Romans infest a beautiful forest and sunken lake. Explore an intricate maze. If you're underwater, breathe the air bubbles to keep from drowning. A countdown begins when your oxygen's running out.

Villains

Enemies

• Grounder - Drill enemy, hides behind walls and appears when Sonic approaches.
• Whisp - Fly enemy, attacks in swarms.
• Chop Chop - Piranha enemy, moves around slowly underwater.

Boss

• Boss: Dr. Robotnik's Hammer Machine
• Hits: 8

Differences between beta and final

• In the Beta, this zone is referred to as Neo Green Hill Zone (not to be confused with the Sonic Advance level of the same name.)
• There are no enemies except the arrow-shooting totems.
• The layout is half-completed.
• There is a weird splashing animation consisting of misaligned bubbles instead of a splashing sprite. Tails has no splashing effects.

Technical Information

0F Aquatic Ruin Zone

2F42 ARZ Palette

2FA2 ARZ Underwater Palette

D4AE ARZ layer deformation info

3FF24 Dynamic pattern reloading for ARZ

401D6 CPZ animated pattern load cue (0)

4077A ARZ misc sprite mappings

42438 ARZ object debug list

45610 ARZ primary 16x16 collision index

45760 ARZ secondary 16x16 collision index

48E94 ARZ act 1 level layout

49264 ARZ act 2 level layout

BB944 ARZ 16x16 block mappings

BCC24 ARZ main level patterns

C1434 ARZ 128x128 block mappings

E6294 ARZ act 1 ring locations

E642E ARZ act 2 ring locations