When I first met the guys making Deepworld, a 2D sandbox-style building game similar to Minecraft, at GDC in March, I told them that the project would be bigger than they thought. They do have extensive experience developing software and servers, but running a game this big requires a significant investment. It looks like they now agree. The game has spawned a Kickstarter project to try and raise some early funds for servers and development.
The group is offering several prizes to supporters, including your own personal servers and worlds, art books and other swag, plus the possibility of getting your own items, name, or even pictures in the game itself. The goal is US$20,000, overall, and as of this writing, the guys have raised about $4,000. They say they want to take the project full-time, and this money will help them do that.
I definitely wish them well. Deepworld looks good, and as I said when I first saw it, the Mac (and iOS) would benefit from a game like this.