Veloren - A multiplayer voxel RPG. Inspired in games such as Cube World, Breath of the Wild, Dwarf Fortress and Minecraft.
Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.
Roblox - Reimagining the way people come together.
Terasology - Terasology (started under the name Blockmania) is an open source project started by Benjamin...
Minetest - Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner...
KetchupLand - A open source voxel game for Windows, Linux and Android.