I tried to install Starcraft on a Macbook Pro with Snow Leopard and the disc was promptly ejected from the drive. Then I installed the updater and was asked to insert a 13 character CD key but the CD key that came with the game is 26 characters. So, I have no idea what, if anything, to do now.
Unfortunate but true. Starcraft was released in 1998, when Macs were using PowerPC chips. Once Apple switched over to Intel processors, they included components in OS X that emulated a PowerPC environment in order to allow people to continue to use the sparse Mac software that was out there at the time. Fast forward. Apple updates OS X on a roughly annual schedule, naming it after some large cat, and adding features. And, for some inexplicable reason, removing features, too. Last year, with the release of OS X Lion (10.7.x), Apple removed the components that allowed users to run programs designed to run on PowerPC based Macs, essentially breaking thousands of software titles out there for the Mac. Starcraft was one of them. And Diablo II. And Warcraft I, II, and III. Neat. If your Mac is OS X Snow Leopard 10.6.x or older, you're good to go. What really amazes me is that you can still walk in to any software seller (like Walmart) and buy the battle chest for Starcraft or Diablo II, that are both clearly marked as PC and Mac, but they won't work on your Mac when you get them home. I'm pretty disappointed in Apple and Blizzard for not seeing to this. Seems like a pretty small fix on Blizzard's side (update / re-compile programs for OS X 10.7+) or Apple (reconsider allowing users to install PowerPC support as an optional install).