Released exclusively for the {{Sega}} GameGear in 1994, ''Sonic Triple Trouble'' – or ''Sonic & Tails 2'' as it is known in Japan – is the sequel to ''[[VideoGame/SonicTheHedgehogChaos Sonic Chaos]]'', and is widely considered one of the best ''[[Franchise/SonicTheHedgehog Sonic]]'' games to appear on the handheld, mostly due to it being the closest in feel to its 16-Bit brothers on the SegaGenesis. It features the debut of Fang The Sniper (or Nack The Weasel as he was called in the English versions).

Somehow finally collecting the six Chaos Emeralds without catching the attention of Sonic, Dr. Robotnik was testing his Atomic Destroyer weapon, when suddenly an accident scattered them once more. Robotnik was able to find one of them, but of course, Sonic and Tails learned about what happened, and now they're off to find the other five before Robotnik can. Expecting this would happen, Robotnik once again deceives Knuckles The Echidna into believing that Sonic and Tails are trying to steal the Emeralds. Thus, Knuckles becomes a nuisance that tries to inhibit the duo's progress. As all of this is happening, Fang The Sniper, a [[MixAndMatchCritter half-wolf-half-weasel]] obsessed with riches, has successfully collected the other five, and has hidden them in five Special Stages each. He's clueless about their power, but bets they'll make him filthy rich. Are you up to the challenge of thwarting this [[TitleDrop Triple Trouble]]?

In addition to the Pogo Spring and Rocket Shoes from ''Sonic Chaos'', ''Triple Trouble'' also gives both playable characters (Sonic and Tails) their own special modes of travel. In Robotnik Winter Zone, Sonic can shred on a snowboard (far more flexible then in Ice Cap Zone in ''[[VideoGame/Sonic3AndKnuckles Sonic The Hedgehog 3]]''), and in Tidal Plant Zone, he can equip himself with scuba jets, which actually allow the blue hedgehog, well known for his {{super drowning skills}}, to ''[[SuperNotDrowningSkills swim]]'', though for a limited time. Meanwhile, Tails – in Tidal Plant Zone – can pilot the Sea Fox submarine, which comes equipped with a torpedo launcher and easy up-and-down movement while underwater. Tails would use the Sea Fox again in ''VideoGame/TailsAdventure''.

Amusingly, on the American and European boxarts, Robotnik is depicted in a slightly modified version of his ''WesternAnimation/AdventuresOfSonicTheHedgehog'' incarnation (this also happened on the American boxart for the Game Gear port of ''VideoGame/SonicSpinball'', even though the Genesis original used the Classic Robotnik; one of many reasons no one mentions the Game Gear version).
!! This game provides examples of:
* AmusementParkOfDoom: Sunset Park.
* ComicBookAdaptation: A 48-page special by ArchieComics.
* CoolPlane: The Tornado, which appears in some of the Special Stages.
* DownTheDrain: Tidal Plant Zone.
* EternalEngine: Atomic Destroyer Zone.
* EvilOverlooker: Robotnik in the American and European box art.
* GreenHillZone: Great Turquoise Zone.
* JungleJapes: Meta Junglira Zone.
* SlippySlideyIceWorld: Robotnik Winter Zone.
* TerribleTrio: Robotnik, Knuckles (by virtue of his gullibility) and Fang the Sniper (a.k.a Nack the Weasel), hence the US title.
* TurtlePower: The first boss of the game is a metallic flying turtle.
* UnderwaterBase: Tidal Plant seems pretty industrial. It's effectively Labyrinth Zone but [[UpToEleven with even more water]] and more machines.
* UnderwaterBossBattle: Surprisingly, the first part of the first boss has you underwater, jumping out to hit a turtle robot. Tidal Plant's boss much later in the game is entirely underwater.
* WarmUpBoss: The first boss, a flying turtle, is actually incapable of directly harming you--the only way it can is for you to get knocked into it by a spring moto-bug while being out of your ball form.
* ZeroEffortBoss: Some of the boss encounters with Nack in the special stages. In the first special stage, he quite literally hits a switch and fries himself.