No you can not, once you save it, it is a permanent thing. I'm sorry.
Chat with our AI personalities
Sorry it's probaly not possible ):
The bottom of the world is the void.
It is not a seed, it is a world download. Look up dropper world download on google or minecraft forums
to play a map, open minecraft, then click singleplayer, choose the world, then click play selected world.
A LAN world means if someone is playing Minecraft using the same modem/router as you, they can come into your world and play with you.