Asteroids is a really fun and awesome classical game that suits all ages. Basically how you play is that press the up key to go up, down key to go down, right key to go right, left key to go left and space to shoot. You have to shoot down all the asteroids to move to the next stage. Big asteroids turn into medium asteroids once they are shot and medium turn into small asteroids. Alien fighters also come and try to shot you.