However, what brings this game into the realm of malicious code is that for every alien ship you destroy, the game deletes a file from your home directory.:o :'(
http://www.symantec.com/connect/blogs/osxloosemaque-it-s-not-just-game-anymore
I like Space Invaders:
http://www.widgetbox.com/widget/space-invaders
thanks kenny, i suddenly went 30 years back in time.
I like pinball machines… 
http://www.youtube.com/watch?v=aOUqRZkR8dE