Mad Gear Zone

Mad Gear Zone is the fourth zone of Sonic the Hedgehog 4: Episode I.
 * Act 1 - Dr. Eggman's Secret Base
 * Act 2 - Escape the Cog Trap
 * Act 3 - Impending Doom
 * Boss - Defeat The Real Dr. Eggman

Triva

 * This zone is similar to Metropolis Zone from Sonic 2.
 * Mad Gear Zone was leaked with a video of Act 2 revealing Super Sonic will be playable in the game.