OpenClonk - OpenClonk is a free multiplayer action game where you control clonks, small but witty and nimble...

Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.

Gnomescroll - Gnomescroll is a multiplayer survival RPG in surreal environments.

Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.

Clonk - Clonk is an entertaining, action-packed game of strategy, tactics, and skill.

Terasology - Terasology (started under the name Blockmania) is an open source project started by Benjamin...