Play Sonic & Knuckles Enhancement Mod Online

Okay, so you know how Sonic & Knuckles was already one of the coolest Genesis games just for that wild cartridge stacking gimmick? This mod takes that and makes it even better—like someone went back and fine-tuned everything you didn’t realize could be smoother. The physics feel just right, the levels have little tweaks that keep you on your toes (I swear some of the shortcuts are different), and there’s even a few hidden nods to other Sonic games if you look closely.

Playing as Knuckles actually feels useful now—no more awkward gliding into bottomless pits—and Sonic’s spin dash somehow feels even more satisfying. The music’s still the same classic tracks, but everything runs so cleanly it’s like seeing the game through fresh eyes. If you’ve got a Genesis emulator or the original hardware, this is the way to replay it.