You cannot find this version on the official Minecraft Launcher (it only goes back to Beta 1.3). To play it, you need a third-party tool.
Release Date: October 16, 2010 Development Phase: Alpha Major Update Context: The Halloween Update minecraft alpha 10 16 02 top
Lighting was purely block-based. There was no smooth "ambient occlusion" (the dark corners in modern Minecraft). Shadows were sharp, and the "brightness to the top" of a cave was a stark gradient. You cannot find this version on the official
What makes this version famous among alpha collectors? Here are the exact mechanics you would find if you launched this build today: minecraft alpha 10 16 02 top
I launched a1.0.16_02 specifically for this article. Here is a raw play report: