Sonic & Knuckles is an action-adventure platform game for the Sega Genesis featuring Sonic and Knuckles against Dr. Robotnik’s Death Egg invasion. Its Lock-On Technology lets the cartridge connect with select earlier Sonic games to unlock expanded play features.
- Cleaned, tested, and guaranteed to play. Authentic cartridge.
- Play as Sonic with new powers or as Knuckles with gliding, wall-climbing, and bare-fisted attacks.
- Knuckles faces both Robotnik and Metal Sonic across high-speed side-scrolling stages.
- Locking on with Sonic 3 transforms Floating Island into a larger 34 meg Sonic adventure with new secrets, Sonic, Knuckles, Tails, and Game Save support.
- Locking on with Sonic 2 enables Knuckles as a playable character with his signature moves.
The game functions as a standalone Sonic release while also expanding Sonic the Hedgehog 2 and Sonic the Hedgehog 3 through the cartridge’s physical Lock-On connector. Its cartridge design is directly tied to the connected Sonic 3 experience often referred to as Sonic 3 & Knuckles.
