einzigartiges Freebuild

Pixeltopia.net bills itself as a freebuild server, so no plots to unlock or ranks to grind through before you can actually place blocks. You just spawn in and start building wherever you like. The name (pixeltopia.net) is the whole address, nothing fancy to remember. Can't speak to what else is going on there beyond that, but the open freebuild setup alone is worth checking if that's the kind of server you're after.