(You have to click the link, the picture is just screen capture.)
You click on the light circles and turn them dark, and try to herd the kitty into a closed circle to catch it before it makes it's way to the edge and scampers away (you have to keep clicking to make a smaller circle until the kitty has nowhere to jump). But every time you click a circle, the cat jumps to another circle! It's a sneaky-puss!
I remember sun...we used to have that. It was nice. It warmed mah belleh!