So it seems Valve has helped widen the Mac gaming market a bit, by announcing Steam for OS X, along with all their Source based games (Half Life 2, Team Fortress, Portal, and Left for Dead). They are also doing the right thing by porting the games over instead of using a windows emulation layer, along with allowing users to buy one copy and use the game on either platform. This brings them up to the level of Blizzard, and it should be interesting to see the impact it has on the rest of the industry. Already, many other developers are talking about Mac development at GDC, with future ports planned of Civilization V, Fallen Earth, the Battlefield series and future strategy games from Gas Powered Games.

Glad to finally see the tide turn, and developers at least considering the platform. For many, the effort isn't much more then existing investments across PC and console development. Game engines are becoming much more portable, and less tied to specific features of each platform.