I can not guarantie that you get excataly as these posts says becouse
Right now, I'm playing on "Forest" (without quotation marks), which is a rather nice, sort of hilly place with this weird super-high pin-mountain-hill-thing.
In the new update, whenever you create a new world, there's a space for "Seeds"
This are most just copies of wha tother people have said
y310 = Mountains
7 = Islands with clay
9999999 etc = mountains with floating islands (dont write etc)
abcdefghijklmnopqrstuvwxyz = Flat spawn (Alphabet)
Notch = Gives you a nice map, with floating blocks. :3
Piggy = Gives you a beach with a bit of grass.
ABC123DEF456 = A regular map...Or is it?
y2k = found a flat land, lava pit on the surface, cacti and a nice little bridge from mountain to mountain. (this is only a little part of the map)
Area 51 = spawns mega cool world for me The coordinates for me are X +55 and z -11 great mountain and such that often only spawns by chunk error =D
Steve VS Notch = Huge islands that will never take you long away from water (only tried once)
42 = put me on a beach with trees and dark green grass. W. Mushrooms
Atlas = (low chance) and spawned on the ocean floor, swam to the surface to be blocked by ice, drowned and respawned on the ice
Made by Notch! = Pretty awsome at x: -47 y: 67 z: -200
amro is super cool dood = Pretty much no matter where you spawn there'll be crazy arching mountains and stuff.
Lava everywhere = it came up with a funny looking mountains with dirt jutting out of the top. X: 129.5 Y:67.62 Z: -141.5
94 = And spawned right next to a lava lake. Cords: X=126 Y=65 Z=-124
8080 = gave me a map with TONS of trees!
ass aids awesome mountains =
+11 = -11's little brother
1 + 2 = 3 = viewtopic.php?f=25&t=189661&p=2765414#p2765414
QICU812 = Epic Mountainous area in my world x: -69 Y : 67
HOLY COW! = I spawned, and then LAVA flow onto the sand and I got killed many times in a row!
person = gave me a epic place to make a tree house cordnets x:8 z:32
022 = Epic forest bridge mountains
TnT = Map that looks destoryed
iwantamountain = Bridge mountains
herobrine = disk shaped mountain there is a little double sided cove filled with coal and sandstone
i don't really think seed will do anything = exactly as i wrote it,it should give you a vast desert,including sand mountains.
Helmsdeep = it's pretty nice flat land.
1234567890 = wired scultures at x:60 z:12
Glacier = Epic map?
Glacier has flying mountains!
IwantIronPlease = spawned me on the coast on your regular Minecraft Island.
england or 'england' = Awosme waterfall
3.14159265 = nice hilly forest with some tini tiny floating blocks.
volcanic islans = Stone / Grass Mountains + Water Fall pretty awsome
glacier = Poupular?
777-000=777 = Poupular?
-77+1001 = Poupular?
EZ = Here are some pics
Happy Birthday! = Cool map pretty wired too but awsome
For your personal designet world type : ''Your username'' (like for me Mushie)