i dont think ive ever seen a game stay number 1 on the steam charts for this long (http://store.steampowered.com/stats/), but skyrim has, even when tf2 went free to play the game wasn't played this long (i think). just out of curiosity ive been checking on it every day and skyrim is number 1 on the charts. This is a truley amazing game and i think its great that lots of people are playing it
.