Somebody should put this on the App Store with 10 textures for $0.99 and extras if you buy more. It would sell like crazy.
No, it wouldn't. It's engaging for about 2 seconds, and doesn't even begin to compare to the addictiveness of a successful game, even if you lumped a bunch of bogus social stuff on. I think this is only really novel to technical users looking through a lens of tech, though of course I think it's incredibly novel too. But addictive video games already do very realistic stuff around hair, cloth, and all sorts of things…
I disagree too, and it seems by the many comments that say how satisfying this is, that others find this fun. Obviously it would need a little more to make it a game, but just like Osmos which is simple physics and a simple concept (absorb smaller things) it can b very satisfying and successful. I think you're over thinking the game buying public. Many games have been little more than a concept like this.