On and off, I enjoy this game. I learned my leasson to push that HELP button when it's getting tight to the time but hard to find next combination to match.
Like the majority of you posters, I would prefer some kind of sound effect
Today, I reached a level where almost all the animals heads was exchanged into new images and it was sooo hard to rethink the patterns so I failed. But still, fun to be challanged when you thin you "got it"...