To download "1.2.0.2" (or similar versions like Beta 1.2_02), the process depends on whether you are looking for the modern Bedrock version, the historical Java version, or the creepy "Beta 1.2_02" myth.
Once you secure your download, you will quickly realize Vanilla Beta is lonely. There are no wolves, no beds, no pistons. To mod Beta 1.2_02, you need a tool called by Risugami. minecraft 1202 beta download free
While "1202" is likely a typo for the historic (part of the Better Together update), this guide will help you understand what this version offered, why it was so important, and how you can legally and safely experience it today. You want to experience pre-hunger, pre-sprint Minecraft