Valve Software, makers of the Steam software distribution platform, has announced that the Mac won’t be a second-class citizen when it comes to new game releases. All future games – including the upcoming Portal 2 – will be released simultaneously for the Mac, Windows and Xbox 360 platforms, according to John Cook, director of Steam development for Valve. The company indicates that software developers who use Source, Valve’s game development environment, will be able to produce native Mac OS X games, not games that run “in emulation.”

Valve leaked its Mac plans last week to several Web sites using imagery culled from its popular games including Half-Life 2.

Steam, Source coming to Mac [IndustryGamers]