The core engine of the 120 client has been rewritten to utilize modern hardware acceleration via WebGL 2.0.
Built-in performance patches remove intensive particles, stabilize framerates, and allow smooth rendering on lower-end hardware like Chromebooks.
Eaglercraft is real Minecraft (Java Edition 1.12.2) running in a web browser using WebAssembly. No installation. No admin rights. No “sorry, this game is blocked.”