"What is Commander Keen?"
Commander Keen was a popular shareware game back in the early 90's. Billy Blaze, an 8-year-old genius, builds a spaceship from junk around the house, then he goes off to Mars and fights the evil Vorticons. Today's games have more advanced graphics and sounds, but Keen is a classic that will live on... It reminds us that video games are supposed to be fun and not taken too seriously. :-)