hoserama

"This means that, out of the box, your Mountain Lion-sporting Mac won't run games purchased on Steam or any other digital distribution service, save for the Mac App Store, until you've adjusted your system preferences to allow those games to run."

No, that's not what it means. It means that unsigned apps (which are a separate thing from the Mac app store) will not run by default. A number of Mac game developers sign their apps, regardless of being on the Mac App store or not, so they will work in 10.8. I would further expect many who do not currently sign to patch their apps before then to add signing because it's simple and easy to do.

Risk: Black Ops is beautiful and I promise to care for it, always.