Sonic & Knuckles is a platform video game developed by Sega for the Sega Genesis, released in 1994. Players control Sonic or Knuckles to thwart Dr. Robotnik's Death Egg threat. The game features a unique Lock-on technology allowing integration with Sonic the Hedgehog 3 and Sonic the Hedgehog 2, enhancing gameplay with new characters and abilities. Players can explore Floating Island and engage in fast-paced action.
Sonic and Knuckles join forces to defeat rotten Dr. Robotnik's Death Egg invasion! Play Sonic & Knuckles by itself or Lock-on with other Sonic games. This game's revolutionary Lock-on technology adds all new features to your other Sonic games for ultimate replays! Play as Sonic and let loose on Robotnik with amazing new powers. Play as Knuckles and tackle Robotnik and Metal Sonic with bare-fisted attacks, high-speed glides and wall-climbing power! Lock-on with Sonic 3 and transform Floating Island into a huge 34 meg Sonic-epic loaded with new secrets! Play as Sonic, Knuckles, and even Tails - with Game Save! Lock-on with Sonic 2 and play as Knuckles with all his signature moves!