Eaglercraft is a popular web-based version of Minecraft Java Edition, specifically versions 1.5.2 and 1.8.8, that has been ported to run entirely in a browser via JavaScript and WebGL
A: Join the official Discord server (linked on the GitHub page). The #download-mirrors channel has 5+ backup links. Never use random YouTube video descriptions. Download Eaglercraft UPD
Eaglercraft UPD is the only browser Minecraft that feels like the real Java edition. Eaglercraft is a popular web-based version of Minecraft