- You may be looking for the Sky Chase Zone.
Sonic the Hedgehog (8-bit)
Fend off deadly laser beams and lethal missile shots. Now you've reached Dr. Robotnik's hideout — the blimp. Face him and erase him!
— Description from the Instruction manual.
Sky Base Zone (スカイベース Sukaibēsu?, lit. "Sky base") is the sixth and final zone of Sonic the Hedgehog (8-bit) for the Master System/Game Gear. As with all other stages in the game, Sky Base consists of two platforming Acts followed by a shorter, third Act which contains the boss. The unusual feature here is that the distinct Acts have completely different backgrounds and level designs.
At the end of the previous level, Robotnik fled to an airship hidden in the smog clouds of Scrap Brain Zone. Sonic, obviously, pursues. Sky Base Act 1 sees the heroic hedgehog navigate his way through the exposed gantries and electric fields of the airship anchorage above Scrap Brain, speeding to catch the fat man's massive escape vessel before it departs. In Act 2, Sonic, without any rings to protect him throughout the level, must brave the fearsome defenses on board the zeppelin itself; cannons, propeller blades, and of course the ever-present threat of falling thousands of feet to hedgehog-y oblivion.
The final fight of Sonic the Hedgehog (8-bit) takes place in some sort of electric chamber within the bowels of the airship. Robotnik observes proceedings from inside a glass case, while Sonic must dodge scrolling pillars of electricity and the occasional energy sphere which the Doctor fires in his direction. Simply dodge the attacks and wallop Robotnik's position when the lightning generator deactivates. The boss is different on Game Gear, utilizing flamethrowers, and the pattern does not change when it is close to defeat.