Play Sonic Erazor (v4.0) Online

So, Sonic Erazor—this fan-made Genesis romhack is basically what happens when someone who really gets classic Sonic decides to make their own take on it. The first thing you’ll notice? The levels feel familiar but twisted just enough to keep you guessing—like someone remixed Green Hill Zone but added way more spikes in sneaky places.

The physics are spot-on, too. No weird floaty jumps or slippery slopes—just that perfect weighty momentum Sonic had back in the day. And the music? Pure Genesis, all crunchy basslines and melodies that stick in your head. I died like three times in the first zone because I kept getting distracted by the soundtrack.

It’s not just nostalgia bait, though. There are some legit clever stage gimmicks—one level has these disappearing platforms that only solidify when you’re not looking at them, which is equal parts brilliant and evil. And yeah, the pixel art pops exactly how you’d hope, all bright and chunky like an old CRT screen.

If you’ve ever thought "Man, I wish there were more official Sonic games that played like the Genesis ones," this is basically that wish granted by someone who clearly gets it.