The listing, Sega Genesis Sonic the Hedgehog and Sonic & Knuckles game cartridges has ended.
Sega Genesis Sonic the Hedgehog and Sonic & Knuckles game cartridges. Sonic & Knuckles is a "lock on" technology game. By plugging Sonic the Hedgehog into and playing them both simultaneously, you can access "Blue Sphere", which allows you to access different variations of a special stage level. Each game is also a stand alone. Other Sonic games can be plugged into Sonic & Knuckles for other special and add-on content. Two cartridges only, Both are in great, playable condition. The pictured games are the exact ones you will receive. Thank you!