FOSS gamedev and creative worlds

I can't find where the really old versions of minetest are available for download. I remember finding it a while ago, but I can't find it. I'm looking for the '3' versions. (Eg, 3.7, 3.1...) Help, please?

Here's the source code: https://github.com/minetest/minetest/releases/tag/0.3.2
It's 0.3, not 3.

A fork of Minetest, voxelands, is based on 0.3.1 but with new features.