Most of us have a lot of games on our rigs that come and go. But there seems to always be a "goto" game that when we get sick of playing everything else, we go back to for relaxation and a break from the current games. For me it's Defense Grid : The Awakening. A TD game that I find easy on the brain, has great replayability and just gives me a break from the others for awhile. What is your "goto" game or games?