Microsoft open sources parts of Minecraft: Java Edition
Two of the most boring parts of Minecraft, unfortunately. Both are something your average first year CS student could put together in a weekend or two.If I can indulge in some self-promotion, I have written mountains of code which implements many of Minecraft's behaviors down to the last detail, which may be a more interesting candidate for study:https://github.com/sircmpwn/truecraftSeeing Balze3D open-sourced might end up being pretty cool, though.