: Go to the video settings immediately. Eaglercraft can be resource-heavy on older hardware, so turning down the "Render Distance" will keep your framerate smooth.
The first time you launch, Eaglercraft will ask you to create a username. It will also create a virtual filesystem. In the portable version, this filesystem is saved as a #EaglercraftWorld file or an IndexedDB record linked to the HTML file's exact location. To ensure portability: eaglercraft 115 portable