Valve Software today officially announced that it is bringing its Steam game distribution platform, as well as its own library of games, to Mac OS X next month.
Steam and Valve's library of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will be available in April.
"As we transition from entertainment as a product to entertainment as a service, customers and developers need open, high-quality Internet clients," said Gabe Newell, President of Valve. "The Mac is a great platform for entertainment services."
Valve also confirmed reports that it will offer its forthcoming Portal 2 game as a simultaneous release for Mac and Windows.
Portal 2 will be Valve's first simultaneous release for Mac and Windows. "Checking in code produces a PC build and Mac build at the same time, automatically, so the two platforms are perfectly in lock-step," said Josh Weier, Portal 2 Project Lead. "We're always playing a native version on the Mac right alongside the PC. This makes it very easy for us and for anyone using Source to do game development for the Mac."
Also included in the announcement is the addition of a new "Steam Play" feature for Steam, allowing purchasers of either the Mac or PC versions of Valve's games to play on the other system free of charge. Third-party game developers distributing through Steam are also widely expected to take advantage of the feature.
Valve leaked a series of teaser images hinting at its move to the Mac platform last week.
