Very simple but very addictive game. You are given a square with 2 small penguins (balls in the original JezzBall) bouncing around. You have to click your mouse (right click changes cutting direction) and cut away pieces of the block without the pengiuns touching you. Once you have cut away more than 75% of the block you proceed to the next stage, each stage adds a pengiun, and gives you a few more lives.

Challenging and addictive little game!