I was wondering how much randomness is involved when a new world is created with the same seed. I know there are striking differences when a different game version is used, and even when I tried to duplicate my 1.14 snapshot world in the released 1.14 version, differences in my home village near spawn were so great that I decided to stick with the snapshot version.
But what if I just create two new worlds using the same seed and exact same game version, will they be nearly identical?
The reason I ask is because I just read an old thread where people were making suggestions for turning on cheats. Some people suggested creating a new game from the same seed with cheats enabled and migrating some region files to the new game. The objection to this suggestion was that it would change the seed. That got me curious.
Worlds created in the same version with the same seed will be nearly identical but there can be minor differences depending on the order in which chunks are generated due to how the player moves around when exploring.
For instance a village built on a slope can have the houses placed differently depending on whether the uphill or downhill side is generated first.
A house on a chunk border might have a high foundation if the upper chunk was generated first or be half buried in a cliff if the lower part was generated first.
Or where lava and water flow together one or the other could have flowed further before the other started flowing affecting the placement of lava, water, obsidian and stone.
And, at least in earlier versions, the presence of water can affect the generation of strongholds.
But if you're copying your region files from one world to the other there shouldn't be any mismatches between chunks unless you had played both worlds before copying so that there were already generated chunks in the second world outside the area that was being overwritten.
If you create the world with the same version and same seed the resulting worlds will be identical.
That includes number and locations of spawned animals and villagers.
This can be verified by creating two copies of a world in creative so you can teleport to a specific location where you know, for example, sheep are and you will find them in exactly the same positions, same number, and colors.
What CAN change is things like water and lava sources as they depend upon which chunk is created first if they are on a chunk border, so which direction you approach a ravine, for example, CAN cause slight differences in what you find.
The last time there was a MAJOR change in the JAVA world generator was between 1.6.4 and 1.7. Worlds with the same seed in 1.6.4 and 1.7.2 will have totally different biome maps.
Since that time there has been very small changes in biome configuration up through the latest release except for the addition of new biomes which cause small differences in the resulting world map.
Rollback Post to RevisionRollBack
There are no dangerous weapons. There are only dangerous people. R.A. Heinlein
If you aren't part of the solution, then you obviously weren't properly dissolved.