User blog:Thundervolt/What's Your All-Time Best Game?

Just simply out of interest  and coz im bored lul , what is everyone's all-time top-of-the-chart blockbuster sock-knockin' game that they've ever played?

It don't have to be anything related to CoD in the slightest way (Call of Duty: Tetris Wars ), just simply comment on what you've enjoyed playing the most or just loved spending your time wasting yo' life playing the heck out of it.

I could make a list if I can...
 * Thundervolt - Medal of Honor: Airborne