The MMO, Cubed.
Trove is an open-ended voxel adventure through countless realms filled with quests, chests, and enemies great and small.



Luanti (formerly Minetest) is described as 'Luanti is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner, Minecraft, and the like' and is a very popular Sandbox Game in the games category. There are more than 50 games similar to Luanti (formerly Minetest) for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Luanti (formerly Minetest) alternative is Minecraft. It's not free, so if you're looking for a free alternative, you could try Veloren or VoxeLibre (formerly MineClone2). Other Luanti (formerly Minetest) like games are Terasology, Vintage Story, eaglercraft and Novetus.
The MMO, Cubed.
Trove is an open-ended voxel adventure through countless realms filled with quests, chests, and enemies great and small.



Drop into a world of unlimited imagination – and llamas – with the LEGO Fortnite game! What will you build?






Magichet is an overhaul of Minetest and is superior to Minecraft in terms of in-game features. New mobs, items, armor types, tools, crops and much more awaits you!.




The Fun-Focused Free Software Voxel World Game. Voxelands is a sandbox construction game based on Minetest.




Blockscape is the next generation voxel sandbox game. You play in a computer generated world made out of blocks.



Download and Play Best FREE 3D sandbox blocks craft game with Creative Multiplayer and Survival Modes! Build creative 3D world online, get resources, craft items in survival, tame animals, watch out mobs and survive! Explore worlds created by others.




MAGE stands for MAKE A GAME EXPERIENCE
The goal for MAGE is to make it as easy as possible for people to create their own 3D universes, adventures and stories. PLAY WHILE YOU CREATE!.




Kidblock is: Building, exploring, world sharing, multiplayer, mobs, rocket launchers, lasers, TNT, swords, crafting, mining, farming, protecting, gameplay recording and much more!




Portal Knights combines the exploration and building elements of Minecraft with the RPG aspects from games such as Zelda. It provides a sandbox, in which players can explore, fight monsters, craft items, and construct buildings, armour and weapons.




An alternative to the Java web game "Minecraft Classic" that was listed on the official Minecraft site but taken down in 2016-2017.

Also open-source and moddable!


it is a non open source game