Does anyone know what was this game was?

I played a video game years ago when I was stationed in Korea. You had to move little spidery critters around the screen - avoiding other critters of course. You'd start at the edge of the screen and cordon off sections of the screen, which would reveal pictures underneath. Not at all complicated, but kinda fun, and I haven't seen anything quite like it since. Any one know what this game might have been?