What computer games do you play?

I have a number of games and enjoy them all yet are not over active on any of them except a few, I was wondering what the people of sharenator play and what are your favorites?

I play or use to play:
(These are in no specific order, *show my favorites of the bunch)
*Combat Arms
War Rock
Perfect World
*Garry’s Mod
Counter-Stike: Source
Left 4 Dead
Team Fortress 2
*Half-Life 2
Half-Life 2 ep1/2

Update: 25 other games I am too lazy to add…

These games I played for quite awhile and still do or eventually quit on them. Now what are the games you’ve played and what are your favorites?