Play Sonic Erazor (v4.0) Online

Sonic Erazor (v4.0) is a fan made game for the Sega Genesis, released unofficially in 2000. It was developed by a small team of enthusiasts, and it fits right in with the kind of ambitious, homebrew projects that started appearing as the official Genesis library wound down. The game takes the familiar Sonic formula and pushes it into much more demanding territory.

You control Sonic through a series of remixed, obstacle heavy levels. The main goal is simply to reach the end of each stage, but the challenge comes from navigating dense clusters of spikes, bottomless pits, and enemies placed with precision. Signature mechanics include screen by screen exploration where hazards often appear off screen, and a heavy reliance on maintaining momentum through perfect jumps and spin dashes. The pacing is fast and the difficulty is high, demanding quick reflexes and careful route memorization. It feels like threading a needle at full speed.