When you first launched Minetest, didn't you think it was just Minecraft? Actually not. Although their interface, style, and gameplay are almost the same, Minetest is essentially a free, open-source and cross-platform voxel game engine (written in C++ and Lua, using the Irrlicht Engine). It was created by Perttu Ahola and first released in 2010, and is now developed by a team of volunteers, with significant contributions from the community. It's available for Linux-based systems, FreeBSD, Windows, Mac, and Android platforms, and provides an API for users to create their own games and mods written in Lua.

Voxel (short for voluempixel) refers to the smallest unit of the world that is made up of objects rendered in three dimensions, which can be cube, sphere, cylinder and many other basic geometries, as well as the iteration forms of complex geometry. When it comes to voxel games, the representative work is of course the well-known sandbox game Minecraft, in which the entire game world was created using voxels.