The plots are different in both the Japanese and English versions of the game. The Japanese story states that a mysterious island rose out of the sea after the events of Sonic & Knuckles and Doctor Robotnik found mysterious "Chaos Rings" there. Chaotix arrived on the island separately and were captured by Robotnik. A curious Knuckles arrives, frees Espio and begins the adventure to stop Robotnik getting hold of all the Chaos Rings.
The English language version is slightly different. It states that Knuckles is the guardian of Carnival Island and Robotnik has arrived to steal the island's power emerald. A visiting Chaotix are placed in a machine and Knuckles realises he can free one team member at a time with the Link-Rings.
The player is required to pick one character from Knuckles and the Chaotix to run through the levels with. They must also pick a team-mate for the player character, with a choice from the remaining characters as well as new additions Heavy and Bomb. Linked together, the two heroes must then use their Link-Rings to navigate winding levels and find Robotnik. Each of the five Zones are separated into five acts, with the time of day cycling every time you enter a new one. Level choices are randomised and the entire level disappears once it has been cleared. The game also features 3D special stages and a "falling" bonus stage.
See Badnik Alert!
- Bombbearer C
- Hoverby MKII
Knuckles' Chaotix has never received a direct adaptation in Sonic the Comic due to low sales. The major new characters, Mighty the Armadillo, Charmy Bee, Espio the Chameleon and Vector the Crocodile, starred alongside Knuckles in their first adventure. They also were forced to fight Metallix, a major villain from the game. Thanks to its release some time near to that of Sonic Triple Trouble, Nack the Weasel was a temporary member of the team.
A two-page feature was dedicated to the game in the Issue 54 edition of the Review Zone. Nick Protz awarded the title 88%, praising its "fast and furious action" but felt it "could be more challenging".
A recent discussion about the game in the Message Zone revealed that the few Boomers who had managed to play the game found it dull and uninspiring with little differentiation between levels, although many did enjoy the special stages.
The previous game to be released was Sonic Drift. The next is Sonic Drift 2.