Minetest

Minetest is a pseudo-infinite-world block sandbox multiplayer game platform of sorts.

I started to develop it and originally published it on the second half of 2010.

Minetest has since grown into a unique community appreciative of open source software principles and block sandbox multiplayer gaming.

A new release is made a couple of times per year.

You should check it out on the actual website, www.minetest.net