Minecraft creator Markus Persson is currently working on a new project called 0x10c. Today he has released a demo for it which showcases physics and lighting. The game is still early in development so expect textures to be rolled in once the mechanics are down.
0x10c is a sandbox adventure title set in space where players will command their own ship. Exploring the universe you’ll come across many planets, on which you can land your ship, mine resources and then trade. You can also act as a space pirate and plunder planets or other space ships along the way. The game will off course have support for online play as well.