[Blink]

The game that I currently play the most often is definitely Tetris. (I have no idea how many hours)

Overall though, I'm not sure what my most played game is. When I was younger, I'd pick up a game every now and then, and play it for a while. Tetris is a bit different then them though, in that I started playing it for stress relief, instead of for fun or because someone convinced me on it.