Atomic Destroyer is the sixth and final level of Sonic Triple Trouble for the Sega Game Gear. As with other stages in this game, Atomic Destroyer consists of two standard platforming Acts followed by a third Act which contains the Zone's boss (or, in this case, multiple bosses). The level comes after Tidal Plant Zone.
Atomic Destroyer is the Doctor's core base in Triple Trouble; and as we have come to expect from Robotnik, it's a technological nightmare of tinted chrome, killer lasers, and mad science. Maze-like networks of vacuum tubes (reminiscant of Electric Egg Zone and Scrambled Egg Zone) whisk the player around the level, frequently depositing him/her right on top of the activation button for badnik generators. And not just any badniks; it's the annoying, tubular Mecha Hiyoko bird-bots that plague the player throughout the 8-bit games, all the way since Sky High Zone. Bomblurs are the other robotic foe found here.
The Atomic Destroyer Zone itself functions as some sort of immense superweapon, according to the Triple Trouble US manual. We never find out precisely whose atoms it's supposed to destroy - but perhaps this is for the best, as Sonic and Tails race towards Act 3, and the many, many consecutive bosses...