Where can I find help with making a voxel game?

Are there any Assets,Tutorials and good explanations on How to make voxel Games.
Im looking for these type of voxels:

http://www.winterkewl.com/games/yogscast/index.html

I want sort of smooth voxels. Or anything that Isnt like Minecraft!

Thanks!

Sometimes it’s fascinating what 30 sec. “googling” brings up:

http://code.google.com/p/voxel-terrain-unity/

If you want to get started with voxels in unity you can check out my voxel engine at the unity assetstore. It is a great way to start off developing your voxel game and it also comes with some really niffty features: Unity Asset Store - The Best Assets for Game Making