The worlds are saved in your browser's neighborhood storage, you may export them as EPK data files and import them again on all other Eaglercraft websites that also guidance singleplayer. To ban consumers by regular expression, use: eag-ban-regex with an everyday expression to match the username in lowercase A https://www.reddit.com/user/ukIsmine/comments/11suiwb/a_comprehensive_guide_to_eaglercraft_minecraft/