Smurf Rescue was freely downloadable from the author's website, but had to be removed after the supposed copyright holder of The Smurfs threatened to sue him for £2000. Bastards.
It's all explained on the forums here, just do a forum search for his thread from a month or two back.
That's sad. Not as if it's a booming platform. And for free as well, not making money. Does that mean we are not allowed to use the word Smurf? Perhaps he should have spelt it Smerf.