Is there a way to find which version a Minecraft world was created in?

I have quite a bit of old minecraft worlds lying around. With the new launcher, I understand I can create profiles for older versions of minecraft, give them their own folders, and copy the saves over to these.

I don't want to load a save with a newer version than it was made. That usually gives ugly boundaries in world gen, or flips doors, or break things in other ways. I understand loading a newer world with an older version is even more likely to break things.

I do of course make backups, but I don't want to try every version of Minecraft for every save that I have. Is there a quick way I can find out which version of Minecraft a world was originally created in and/or last saved in?

Solution 1:

As of now, underneath the world's name, original name, an last time played, it tells you the base gamemode, if there are cheats or not, and the version.

Solution 2:

Yes, you can find it based on the "DataVersion" stored in the stats or advancements JSON files. Check the wiki's data version page to see which client version the data version corresponds to.

The easiest way I found to do it is by searching the advancements file for the world, for example:

$ cd ~/.minecraft/saves/"New World"
$ grep DataVersion advancements/*.json
  "DataVersion": 1976

Data version 1976 corresponds with client version Java Edition 1.14.4.

Solution 3:

As mentioned by Cin316

this is not possible as nothing about the MC version is saved in the file.

However an alternative moving forward is to put the version in your save name. so "My world 1.7.2" by doing this you will be creating your own metadata as it were so you can keep track of your saves.

I understand this doesn't help with already created worlds unless you know the version but it will help you with anything you create from now

Solution 4:

A bit late, but you can use the last date the file was modified, and check it with the update history.

Solution 5:

In the game, use this command:

/data get entity @s DataVersion

This will show a number that indicates the data version.

You can see which client version is associated with that data version by checking the wiki here: https://minecraft.gamepedia.com/Data_version#List_of_data_versions