Use the W key to move up and the S key to move down and dodge all of the red lasers and the red bars at the top and bottom. You have five lives, and once you lose them, the game is over. When you first start, you have 1 second when the green rectangle is invincible so that you don't die immediately. The time you survive is your score. Sometimes you have to click the green flag twice.
I had an idea for a game and I decided to try and make it, so this is the end result.