Funny little puzzler. The idea is neat, but I had trouble to understand it at first. The menu is very unintuitive: I first thought that the level selection would actually be a help screen... :D
I also wished to see how many cards I have in total...
The music is cozy and fine, but too short: it gets quickly repetitive.
Since the main fun seems to be to figure out *what* the cats want, rather than to fit them in once you know it (that's the easy part so far), I wonder how long the fun of the game would last.