Play Sonic & Knuckles online in your browser and enjoy with Emulator Games Online! Sonic & Knuckles is SEGA game USA region version that you can play free on our site. This game has arcade, platform genres for Sega console and is one of a series of Sonic games. If you love Sonic games you can also find other games on our site with Retro Games. Below you will find control for the emulator to play Sonic & Knuckles.