What happens when you throw Minecraft, EVE Online and PC gamers at each other? You apparently get StarMade. It's a voxel-based sandbox set in space with planets offering minable biomes to explore.
What's more is that we get to create our own ships, our own factions, space stations and more. There's even AI we can tinker. Right now it's available in alpha form for free.
Valve has announced 16 applicants at Steam Greenlight, fourteen of which are indie games, have been approved for Steam listing.