is not an official release from Mojang Studios. It is a popular creepypasta or "mystical version" often shared in the community as a "cursed" or haunted game file.
Released in November 2010, Alpha 1.2.7 was a minor patch within the larger (Alpha 1.2.0). This update was monumental for Minecraft because it introduced features that are now fundamental to the game: Minecraft Alpha 1.2.7 Download
So, what made Minecraft Alpha 1.2.7 so special? Here are some of the key features that defined this build: Minecraft Alpha 1