go into world options and then check superflat.
There is no seed for "flatland." If you mean a flat world, you can switch to the flat world setting in the world creation settings. If you know there is a "flatland" seed you should specify what you mean.
flatering
No, yo need MCedit to make a flat area.
Modded is a great minecraft xbox 360 seed and worstseedever
Yes but it does not work
Every Minecraft seed has water.
1134648poooo
Yes. The seed option is tied to the game, and not the internet.
there are many seeds but the best one (in my opinion) is worstseedever
Pokemon on Minecraft is a mod, not a seed. Search the Minecraft Forum.
ps3, xbox 360, or pc? pc
it not flat at all but jpgaming is a good seed with diamonds hidden