Cooperative building, mining and town protecting against attacking kaiju in a blank canvas world of animated futuristic 1967 Russia made by the PixelJunk guys. Or something.
I just found this 40 minute video
of them streaming the gameplay during an ExtraLife marathon and goddamn, their materials and lighting just blows my mind. Combined with the art style of the old style 50's/60's toys and animation it all has a really unique, awesome look to it.
I think they had an alpha sign up until very recently, but I can't find that anymore.