.DAT_OLD File

File extension dat_old is associated with Minecraft, a popular construction game, made by independent programmer Markus "Notch" Persson and later bought by Microsoft.

A .dat_old file contains Minecraft game backup.

Files with dat_old extension can be usually found as backups from Minecraft sandbox construction computer game.

How to open:

You can restore *.dat_old files in Minecraft with one of the program functions.

How to convert:

You cannot convert Minecraft backups to anything else, you can just recover them and use them again in the game.