Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.
Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.
Minetest - Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner...
Life is Feudal: Your Own - Life is Feudal: Your Own is a Massively Multiplayer, Role-playing, Open World and Survival video game developed and published by Bitbox Ltd.
Creativerse - Creativerse is a sandbox adventure game set in a beautiful yet treacherous world shrouded in...
Terasology - Terasology (started under the name Blockmania) is an open source project started by Benjamin...