The Miner's Seeds 2015: Top Unofficial Minecraft Seeds Tips & Tricks Handbook Exposed!: The Blokehead Success Series (Unabridged‪)‬

World materialization in Minecraft is dependent upon the hard coded algorithm. The algorithm needs a seed that is a combination of alphanumeric characters in order to create a world. A seed can contain one to 32 characters allowing for numerous unique worlds. Do not confuse Minecraft seeds with plant seeds, which are planted by players within Minecraft worlds. Minecraft's world generating algorithm and seed values allow players to recreate the same world using said world's seed value.

Simply put, when a seed value from a present world is inputted in the algorithm, that same world will be replicated. This rule remains the same no matter which game console or computer is used.