On Monday video game developer Valve announced they are finally bringing Mac support to their Steam digital distribution platform and Source Engine that powers Valve games like Half-Life and Portal.  The popular Valve lineup of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will make its way to Mac users this April.  To add to this exciting news comes, well, even more exciting news.  Valve also announced Steam Play:  [this] allows customers who purchase the product for the Mac or Windows to play on the other platform free of charge.  For example, Steam Play, in combination with the Steam Cloud, allows a gamer playing on their work PC to go home and pick up playing the same game at the same point on their home Mac. We expect most developers and publishers to take advantage of Steam Play.”  Holy hell yes.  Oh, and Portal 2, sequel to the highly acclaimed 2007 action/puzzle game, will be the first simultaneous release on the PC and Mac.  Valve Mac teaser posters in the gallery below.

[Via Joystiq]