Frogs are popping up all over, and these frogs aren't normal. After a few seconds, they start flashing like crazy. That's when you need to come in and remove them. Click on a flashing frog to earn points and clear it from the screen, but watch out for any frog that isn't green. While yellow frogs will earn you extra points, clicking on a red frog will take points away, and if you click on a brown frog, you'll immediately croak and the game is over. To beat each level, have more points when your time is up than you did when it started. Then keep playing to continue increasing your score and see how high you can get it.