Don't Bother Trying
No matter how far you get in this game, you will never finish. This is because the last ten percent is literally impossible.
You are presented with a screen full of randomly appearing and crawling bugs, and the instructions "The last 10 percent! Game is loaded but there are bugs. Don't let them get away! Kill them all! Remember, clicking on them slows them down!" The bugs appear from off screen and make their way at varying speeds towards the alternate edge, growing red to indicate that they are about to escape. When you click on a bug, it is randomly pushed to some other point, where you must click it three more times to get it to disappear, moving and being pushed all the while. If a single bug makes it across, your progress is reset.
Assuming you don't mind frenzied, random clicking, this wouldn't be much of a problem if it weren't for the massive AddictingGames logo in the bottom right corner. If so much as a single bug crawls under that ad, it will escape and reset your progress as you angrily close the several resulting AddictingGames tabs that pop up when you accidentally click it. Add that to the chances of a bug spawning in a corner and making it off the screen in half a second flat and you have a completely impassible level.
3 of 10, for interesting concept, but absolutely dreadful execution and wholly impossible-to-complete game.