[ Thanks to dart for this link. ]
CraftStudio is an upcoming collaborative gaming making
tool for Linux, featuring Minecraft style blocky graphics. The tool
aims to bridge gap between developers and gamers by simplifying
content creation. Gamers with no particular experience on game
development will be able to easily create, paint and animate 3D
models (characters, objects) out of blocks, craft infinite maps,
paint own blocks and give life to their worlds using a visual
scripting system.Everything is done in real-time, you can collaborate with
friends or strangers over the Internet. You can also set up your
own server or join an existing project.