: Under the "General" tab, check the box that says "Show historical versions of Minecraft: Java Edition in the Launcher" . Create New Installation : Go to the Installations tab at the top. Click New installation .
: Give it a name (like "Nostalgia"), hit Create, and then click Play! Why Play Alpha Today? Minecraft 1.2.6 Alpha Download LINK
allows you to play almost any historical version of the game as long as you own a legal copy. How to Download and Play Alpha 1.2.6 : Under the "General" tab, check the box
(Note: Direct links expire after patches, but you can find the permanent archive at mcversions.net ) : Under the "General" tab