Ever blasted through Green Hill Zone so many times you could do it blindfolded? This demo cranks up the difficulty on classic Sonic 1 levels—those loops feel faster, the spikes sneakier, and those damn crabs actually coordinate their attacks now. It's still the same physics you remember (no cheap shots), just way less forgiving when you mistime a jump.

First time I tried it, I ate dirt within seconds because I forgot the springs launch you twice as high. The emerald special stages? Let's just say I'm still trying to beat the first one without faceplanting into a cluster of red spheres. If you've got muscle memory for the original, this'll mess with you in the best way.

Fair warning: Your Genesis controller might not survive the frustration. But nailing a perfect run feels incredible.