Electric Egg Zone is the sixth and final zone of Sonic Chaos for the Sega Game Gear / Sega Master System, coming after Aqua Planet Zone. In keeping with the other stages of this game, Electric Egg consists of two standard Acts followed by a shorter, third Act which contains the boss. Geographically, this Zone is located on South Island (as is the rest of Sonic Chaos).
Electric Egg is a sprawling techno-fortress, and the Doctor's final base in the game. Automatic laser cannons, bottomless pits, and spikes aplenty await Sonic and Tails as they close in on Eggman himself. The zone is criss-crossed by a network of winding vacuum tubes, reminiscent of Scrambled Egg Zone from the previous Master System adventure, Sonic the Hedgehog 2 (8-bit).
Unlike previous Eggman bases, this one seems a lot more computerized in theme, giving it a techno feel. There are large circuitry panels, and exposed wires.
||Breakaway floors, laser guns and indestructible booby traps are lurking dangerously in this final zone. Conveyor belts make for slippery progress. The Laser Walker can get you with its bounce shots.
— Game Gear version manual
||Guided lasers guard the corridors of this Zone, and you have to move fast to outrun them. Dodge the robot bombs that drop from the pipes. Use the D-Button to guide your passage through networks of pipes, and grab all the Rings and Items you can. Finally you'll meet with Robotnik himself, in an arena he has prepared especially for you...
— Master System version manual