Manic Digger

Home: http://manicdigger.github.io/, https://sourceforge.net/projects/manicdigger/
Inspirations: Minecraft
State: mature, inactive since 2017
Download: https://github.com/manicdigger/manicdigger/releases
Platform: Windows
Keywords: simulation, remake, sandbox, voxel
Code repository: https://github.com/manicdigger/manicdigger.git, https://git.code.sf.net/p/manicdigger/code
Code language: C#
Code license: Public domain, Unlicense (where Public domain fails)

Remake of Minecraft.

Building