The first really cool shooter game. This now sucks compared to what you can play these days, but space invaders is still a great way to waste time.
I am not so sure that you should be worrying about the total annihilation of earth's population as it is only a game :).
The trick is to start with the ones on the sides and to take out a whole column. This gives you more time to take down those space invaders.
I don't trust anyone who doesn't laugh
