OpenSpades - OpenSpades is an open source OpenGL-based alternative game client by yvt that can be used to play...
Blockland - Blockland is a non-competitive multiplayer sandbox-style construction game. It's kind of like playing with legos on the internet.
Roblox - Reimagining the way people come together.
Blocksworld Wool - Download mods for Blocksworld!
Voxel Turf - Voxel Turf is a free-roaming voxel-based city building (and destroying) game, inspired by...
Minetest - Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner...