It's a Java-based Infiniminer-like game. So far you can dig around, create 4 types of blocks and just build stuff.The block types don't do anything special, besides grass tending to spread onto sunny dirt blocks. There's empty caves on the map, too.I really like how smooth it runs for a Java applet, and that I don't need silly extra stuff to run it.The future features, including multiplayer, also seem promising, such as survival mode where you have to eat and build, or fortress mode where two maps connect to each other to duke it out.