I have to give a plug to a online game that I was playing when I needed a break from working on Drupal Websites. The name of the game is Desktop Tower Defense. Desktop Tower Defense is much like the Warcraft tower defense games but build into a "little" flash game. You use different towers to battle off one or two lines of "innovators" and stopping them from geting from one side of the board to the other. It's a great stress relief after a hard session of working. See if you can beat my score of 7650 on version 1.5 on hard mode.