It is highly recommended to download the Offline HTML/JS version. This allows you to play even if the hosting website is taken down. You can find these files on the Eaglercraft-Archive GitHub or Eaglercraft.dev .
Eaglercraft is not an official Mojang product — it’s a reverse-engineered browser port. The only legitimate way to play is using and downloading the official offline/single-player HTML file from the original developer’s GitHub (if still available) or using a community-hosted copy where you provide your own assets. eaglercraft 18 8 fixed