Wired’s Chris Kohler, Valve Brings Hit Games, Steam Service to Mac:
“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, said Portal 2 project lead in the press release. “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.”
I don’t know if it was adulthood or switching to a Mac, but with both I stopped playing computer games. After this, I won’t have the Mac excuse anymore.