Clic on the green flag and good game ! When you start, you have 100 lifes, if during the game you have no more life, you lose, but if after 60 seconds (1 min.) your planet is not destroyed, you win. Use the arrow keys to move your spaceship. There are 4 kinds of asteroides : _Alpha, the biggest one, -4 lifes, very slow, _Beta, nearly as big as Alpha, -3 lifes, a bit slow, _Delta, nearly as big as Beta, -2 lifes, quit fast, _Omega, the little one, -1 life, very fast. If you touch the asteroides with your spaceship, you destroy them, but if they touch the Planet, they will destroy it. That were your instructions commander, good luck and save the Humanity !