I think this has the potential to sell a lot. I was under the wrong impression about it's controls, I'm still surprised they didn't go with a control scheme more like Pikmin NPC, but regardless this game should have very wide appeal, it's visually striking, humorous etc. All they have to do is get the word out. It has the potential to spread well by word of mouth, even if there's no local multi-player to speak of it looks like the kind of game you could play with other people around(in the same way the Sims is often played socially even though it's technically single player).
God I hope I am right. Edit: One thing is certain. It will have a lousy first week and there will be a "Little King's Story flopped" thread on this forum. But it's not about first week sales.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.