In both Java and Bedrock editions, the level.dat file uses the format. This compressed format stores global world data, including:
If you open a world from Minecraft 1.16 in 1.20, the game updates DataVersion automatically. If you manually edit a level.dat and accidentally delete or revert DataVersion to 1 , your game will think it’s an Alpha world and . Always leave DataVersion alone unless you know exactly what you're doing. level.dat editor minecraft