Ice Razerrr is a wall-building arcade game. It's freeware.
There are penguins on an iceberg in Antarctica. You have been selected to catch them so they can be shipped to Finland, where they are essential to a secret plot for world domination. Or something.
The left mouse button starts drawing lines; the right (and/or middle) button toggles between making vertical and horizontal lines. Note that left clicking actually starts two lines: either up and down or left and right. If one of these lines is hit before it reaches the edge of the iceberg, you'll lose a life. If both are hit, you'll lose two lives. As a tiny bit of grace, if you click directly on a penguin, it'll say "Ouch" and nothing else will happen. Once a line is completed, any area containing no penguins is cleared. Once 80% has been cleared, the level is complete. You get an exponential bonus for every percentage point above that, so you want to try to make your last line suddenly clear a huge chunk of ice.