Sonic & Knuckles + Sonic the Hedgehog 3 is an online SEGA game that you can play at Emulator Online. This free Sega game is the United States of America region version for the USA. It has been played 11,061 times so far and was posted on August 13, 2016. Sonic & Knuckles + Sonic the Hedgehog 3 is a single title from the many arcade games, skill games and sonic games that we offer for this console. If you enjoyed playing this, then you can find similar games in the sega games category. Sonic & Knuckles + Sonic the Hedgehog 3 game is from the various retro games on the site, and there are more games like this, including Sonic Mania Edition, Knuckles’ Emerald Hunt and Sonic the Hedgehog 3.