Luanti

Luanti (formerly Minetest) is a community-driven, free and open-source voxel game engine, available on various platforms. Originally, Luanti was a voxel game created in October 2010 by Perttu Ahola to explore the mechanics of Minecraft. Over time, Luanti evolved from the original Minetest game into a general game engine as developers integrated new features.

Games installed on Luanti can be played through worlds, formed using 3D voxels called nodes, which function like digital building blocks. Scenery is created by using nodes to represent various types of landscape or immobile objects, such as land, water, trees, and rocks. Conversely, animated (moving) beings, often referred to as mobs or NPCs (characters controlled by the game) can be created to interact with the player and the world. Luanti allows users to create their own scenery and mobs, or they can use packages that have been created by other users; these content creators are referred to as modders or developers.