Kill the Corona to score points. Press the green flag to start the game, and it will start immediately. So don't wait! You have to kill the corona 30 times to win. Please comment if you feel like you want to change that. The time won't time correctly, so you might want to time yourself if you want to figure out the real time. (if you know how to fix that, plz tell me.)
I challenge you to play this with a mouse.