Sega swore by the moon and the stars in the sky that Sonic would reappear on the Genesis before the year's end, and they intend to make good on that promise! Our spiny blue speed demon is back with a new accomplice: Knuckles the Echidna. What is an echidna you may ask? Apparently, it's some sort of floaty, red porcupine. Sonic and Knuckles is the upcoming add-on cartridge made to plug in-between Sonic 3 and your Sega Genesis. Once active, this upgrade will add-in a plethora of levels and features thus far unseen in the third entry to the Sonic series. Play as Knuckles and soar through the skies with his amazing gliding skills or climb up walls to hidden areas never before uncovered. New items will appear throughout the stages too, such as a metal crank to help Sonic traverse ledges, and a float-enabling umbrella. Oh, and it will function with Sonic 2!