Seed (level generation) Minecraft seeds are values made up of
characters (including numbers), or just one character, that is
used as the basis for generating every Minecraft world. Whenever
the game has to generate a new world, it calls upon an
algorithm. This algorithm will output a pseudo-random value that
is then used to determine what the world will look like.
However, the algorithm will always end up with the same value if
the starting point (seed) that the algorithm uses is the same
number. This is why seeds exist-to easily generate entirely
different worlds from a single value. Whenever the world
generation algorithm is updated, the same seed will no longer
generate the same terrain. This is why in some different
versions of the game, the same seed will not give the same
world. A world's seed is set when that world is created. By
default, it is decided automatically (if so, the game uses the
system time as the seed), but it can also be set manually. Set
and reuse a seed to replay that world, or use a k