For the past few years, the French game and humor site called Uzinagaz.com has been featuring an online video game which challenges players to prevent jetliners from flying into the Twin Towers. As the game progresses, the planes arrive with increasing frequency and eventually each tower collapses in a plume of digital dust. The tagline for the game, called New York Defender, says "Go beyond your powerlessness and use your mouse to fight back."......