Games coming to Mac via Steam

So far Steam has announced a few games that will be coming to Mac users when Steam comes out of beta and is officially launched for Mac users. Although there is a possibility that the Steam Store may sell Mac-exclusive games in the future below is the list games that have been confirmed for Mac OS X:

+ Counter-Strike (presumably Source)

+ “The Half-Life Series”

+ Left 4 Dead

+ Left 4 Dead 2

+ Portal

+ Portal 2 (upcoming)

+ Team Fortress 2

+ Madballs in…Babo:Invasion