Go to their website, I'm DLing the game now.
I'm certain upon reading the article that the wii game isn't a port of this. There is only one small level, and there is no reward for completing it. This PC version is essentially a demo. It was seen as being very creative and got picked up to be made into a full game.
You can find me on facebook as Markus Van Rijn, if you friend me just mention you're from VGchartz and who you are here.