Hydrocity Zone

Hydrocity Zone, Act 2

Hydrocity Zone is the second zone in Sonic 3. This zone is completely underground - whoever you are playing as will fall from the top at the start of act 1, and be launched up on a water spurt to Marble Garden Zone at the end of act 2.

Glitches

• As Hyper Sonic, you can travel over the top of the level and into Knuckles' area. Once you have done this however, you are stuck unless you have debug mode activated.

Villains

Badniks

• Turbo Spiker — A red-wheeled vehicle with a spike attached to it.
• Buggernaut — A blue mosquito that usually comes at you in groups of three.
• Jawz — A blue, flying shark robot.
• Blastoid — Your standard cannon... Sonic style.
• Mega Chopper — Red pirahna that bites you. Similar to that of previous games.
• Pointdexter — A spiked pufferfish.

Mid-boss

Hydrocity's mid-boss is a spherical contraption with four rockets. This device spins back and forth through the u-shaped pit in which you are standing, before settling on a pole set in the middle of the arena. It's only safe to attack the device while it is in the middle, at which time it will have begun to turn the pole, which in turn stirs the water, and your character. However, you can spindash up the side and attack while it is offscreen without getting hurt. Though the boss itself is relatively simple to beat, remember that Sonic and co. can still drown while underwater.

Boss

The boss is similar to the mid-boss in a way. As you enter the arena, the water level drops to the floor and Eggman flies in, his craft fitted with an impeller underneath and depth charges at the back. He flies from right to left above you, where you cannot reach him by jumping, but periodically lowers himself to the water, revving up his impeller. During this time, it is possible to jump and hit the front of his machine, but when he hits the water you want to be as far away as possible. Upon touching the water, he begins to draw it toward him, while slowly rising. This draws the water into a flume beneath him. If you do not move to the edge of the screen and hold this direction, you will be drawn into it. When Eggman releases the water, he moves off and the plume begins to drop. At this point the top becomes solid allowing you to leap onto it and use it to reach his machine. As he flies across the top, he will also periodically drop depth charges which, if times correctly, can also be used to reach him. After eight hits his craft explodes.